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Alexander Rothkopf (UiS TN IMF)8/1/22, 9:00 AM
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Dagny Sunnanå Hausken8/1/22, 9:05 AM
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Merete Vadla Madland (University of Stavanger)8/1/22, 9:15 AM
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Anders Tranberg (UiS - TN - IMF)8/1/22, 9:25 AM
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Alexander Rothkopf (UiS TN IMF)8/1/22, 9:30 AMPlenary Talk
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Andrea Shindler (MSU/FRIB)8/1/22, 10:00 AMPlenary Talk
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Lukas Heinrich (TU Munich)8/1/22, 11:00 AMPlenary Talk
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Giacomo Cacciapaglia (IP2I Lyon)8/1/22, 11:30 AMPlenary Talk
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Andrea Mauri (Nikhef), Ashutosh Kotwal (Duke U.), Joaquim Matias (Universitat Autònoma de Barcelona), Lukas Varnhorst (University of Wuppertal), Tom Tong (University of Siegen)8/1/22, 12:00 PM
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Iwona Sputowska8/1/22, 2:00 PM
The strongly intensive quantity $\Sigma$ is a new observable, introduced recently to the domain of heavy-ion physics. In superposition models which assume independent particle production from statistically identical sources, $\Sigma$ is insensitive to the number of sources and its fluctuations, contrary to the standard forward-backward correlation coefficient ($b_{\rm corr}$). Therefore, it...
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Jaume Tarrús (IFAE)8/1/22, 2:00 PM
Most of the exotic quarkonium states have been observed in transitions to standard quarkonium states plus light-quark hadrons. However, so far very little is known of these transitions widths in the Born-Oppenheimer picture of exotic quarkonium, that is when exotic quarkonium are considered as heavy-quark-antiquark bound states over the spectrum of static energies for any given set of light...
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Ch Ecker (Goethe University Frankfurt)8/1/22, 2:00 PM
Determining the phase structure of Quantum Chromodynamics (QCD) and its Equation of State (EoS) at densities and temperatures realised inside neutron stars and their mergers is a long-standing open problem.
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I will present a framework for the EoS of dense and hot QCD that describes the deconfinement phase transition between a dense baryonic and quark matter phase via the holographic V-QCD... -
Robert Pisarski (Brookhaven National Laboratory)8/1/22, 2:00 PM
I discuss how objects with topological charge 1/N can arise in CP(N-1) models in 1+1 dimensions, and in SU(N) gauge theories, without dynamical quarks, in 3+1 dimensions. The ansatz involves multivalued functions: a Z(N) vortex in the former, and a Z(N) monopole in the latter. Unlike classical instantons, such a quantum instanton has a fixed size on the order of the scale for confinement. ...
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Daniel Alvestad (University of Stavanger)8/1/22, 2:00 PM
This study explores the utility of a kernel in complex Langevin simulations of quantum real-time dynamics on the Schwinger-Keldysh contour. We give several examples where we use a systematic scheme to find kernels that restore correct convergence of complex Langevin. The schemes combine prior information we know about the system and the correctness of convergence of complex Langevin to...
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Matteo Di Carlo (University of Edinburgh)8/1/22, 2:00 PM
The increasing accuracy in the experimental measurements of several hadronic observables related to weak processes, which in many cases is smaller than $\mathcal{O}(1\%)$, requires the inclusion in theoretical calculations of subleading corrections that were neglected so far. Over the past decade isospin breaking effects due to electromagnetic interactions and to the up-down quark mass...
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Daniel Spitz (Heidelberg University, Institute for Theoretical Physics)8/1/22, 2:00 PM
Finding order parameters for the detection of critical phenomena and self-similar behavior in and out of equilibrium is a challenging endeavour in non-Abelian gauge theories. Tailored to detect topological structures in noisy data and accompanied by stability and limit theorems, persistent homology allows for the construction of sensible and sensitive observables. Based on state-of-the-art...
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Abhishek Mohapatra (Technical University of Munich)8/1/22, 2:20 PM
In order to understand the nature of the XYZ particles, theoretical predictions of the various XYZ decay modes are essential. In this work, we focus on the decays of the heavy quarkonium hybrids in the EFT framework. We start with the weakly coupled potential NRQCD effective theory that describes systems with two heavy quarks and incorporates multipole expansions and use it to develop a...
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Lorenzo Bartolini (Henan University)8/1/22, 2:20 PM
Description of nuclear matter in the core of neutron stars eludes the main tools of investigation of QCD, such as perturbation theory and the lattice formulation of the theory. Recently, the application of the holographic paradigm (both via top-down and bottom-up models) to this task has led to many encouraging results, both qualitatively and quantitatively. In this talk, I will present our...
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Swagato Mukherjee (Brookhaven National Laboratory)8/1/22, 2:20 PM
I will present some recent state-of-the-art lattice QCD results revealing partonic structures of pion and kaon. These results will include valance parton distribution function of pion, pion distribution amplitude as well as electromagnetic form factor of kaon at large momentum transfers.
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Oleksandra Panova8/1/22, 2:20 PM
NA61/SHINE is an experiment at the CERN Super Proton Synchrotron. The main goals of the experiment are the search for the critical point of strongly interacting matter and study the properties of the onset of deconfinement. In order to reach these goals, the two-dimensional scan in beam momentum (13A-150A GeV/c) and system size (p+p, Be+Be, Ar+Sc, Xe+La, Pb+Pb) was performed.
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In the final... -
Niko Jokela (University of Helsinki)8/1/22, 2:25 PM
Gauge/gravity duality is a great vehicle to guide one's path when strongly coupled. We show that this duality will explain many unusual scaling laws for bipartite entanglement entropy and quark-anti-quark potentials present in the numerical data we obtain from the lattice Yang-Mills theory in three- and four dimensions. We also discuss their dual gravity descriptions.
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Matteo Favoni (TU Wien)8/1/22, 2:30 PM
Recently, the introduction of relevant physical information into neural network architectures has become a widely used and successful strategy for improving the network's performances. In lattice field theories, such information can be identified with gauge symmetries, which are incorporated into the network layers of our recently proposed Lattice Gauge Equivariant Convolutional Neural...
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Andrew Cox (University of Toronto)8/1/22, 2:30 PM
In this talk I will discuss how mixed 0-form/1-form anomalies arise in the Hilbert space of gauge theories in 4d for arbitrary gauge group. I will show how the anomalies reveal an exact degeneracy of states for an arbitrary torus size. Finally, I will discuss some of the implications of our results for semiclassics, the infinite volume limit, and dualities.
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Roberto Bruschini (IFIC (Universidad de Valencia - CSIC)), pedro gonzález (Universitat de Valencia)8/1/22, 2:40 PM
The diabatic approach in QCD [1-3] allows to describe a quarkoniumlike meson in terms of heavy quark-antiquark and open-flavor meson-meson pairs, interacting through a coupled-channel potential inferred from lattice calculations of string breaking [4]. In this talk, we present a systematic analysis of $J^{PC}=1^{++}$ charmoniumlike mesons with energies up to $4.0$ GeV within the diabatic...
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Harleen Dahiya (Dr. B.R. Ambedkar National Institute of Technology, Jalandhar)8/1/22, 2:40 PM
We have calculated the axial-vector form factors for the hyperon semileptonic decays $B_i \rightarrow B_f l \bar{\nu}$ in the chiral constituent quark model ($\chi$CQM). The decays considered here are the strangeness changing as well as strangeness conserving semileptonic decays of the hyperons. The conventional dipole form of parametrization has been used to analyse the $Q^2$ dependence of...
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Jon-Ivar Skullerud (National University of Ireland Maynooth)8/1/22, 2:40 PM
We present the most recent results from the FASTSUM collaboration for hadron properties at high temperature from anisotropic lattice QCD. This includes the temperature dependence of the light and charmed meson and baryon spectrum, as well as properties of heavy quarkonia. We also present the status of our next generation gauge ensembles.
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Nicolas Kovensky (IPhT - CEA - Paris, Saclay.)8/1/22, 2:40 PM
I will discuss the recent description of realistic neutron stars using a model derived from holography in [2111.03374,2112.10633]. After a brief review of beta-equilibrated isospin-asymmetric dense holographic baryonic matter within the Sakai-Sugimoto model, I will discuss how the resulting equation of state is used for constructing the full compact star within a single framework with only two...
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Keh-Fei Liu (University of Kentucky)8/1/22, 3:40 PM
After examining the mass and pressure decompositions of hadrons in the stress-energy-momentum tensor, it is found that the glue part of the trace anomaly can be identified as originated from the vacuum energy of the glue condensate and gives a CONSTANT restoring pressure which balances that from the traceless part of the Hamiltonian (quark and glue kinetic energies) to confine the hadron, much...
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Mikhail Mikhasenko8/1/22, 3:40 PM
The last two decades have witnessed the discovery of a myriad of new and
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unexpected hadrons. The future holds more surprises for us, thanks to
new-generation experiments. Understanding the signals and determining
the properties of the states requires a parallel theoretical effort. To
make full use of available and forthcoming data, a careful amplitude
modeling is required, together... -
Junhao Yin (Korea University)8/1/22, 3:40 PM
The Belle experiment at the KEKB energy-asymmetric e+-e- collider
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accumulated dataset with integrated luminosity of 1/ab, including
Upsilon(nS) on resonances, off-resonances, and Upsilon(5S) scan data. And
the Belle II experiment is a substantial upgrade of the B factory facility,
with much higher instantaneous luminosity and will accumulate 50/ab of
data. Belle II has already accumulated... -
Mr Haradhan Adhikary (Jan Kochanowski University (PL))8/1/22, 3:40 PM
The existence and location of the QCD critical point is an object of both experimental and theoretical studies. The comprehensive data collected by the NA61/SHINE during a two-dimensional scan in beam momentum (13A-150A GeV/c) and system size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La, Pb+Pb) allows for a systematic search for the critical point – a search for a non-monotonic ...
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Savvas Pitsinigkos (University of Southampton)8/1/22, 3:40 PM
Cold and dense matter can be explored in a systematic way both in the high-density (perturbative QCD) and low-density (Chiral EFT) regime. However, the path connecting them is yet to be discovered. As a result, these descriptions are usually extrapolated into the intermediate density regime and then connected at some transition point. In this work I will present a model that has features of...
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Dong Jo Kim (University of Jyväskylä)8/1/22, 3:40 PM
One of the primary goals of heavy-ion physics is to understand the transport properties of the quark-gluon-plasma (QGP) which comprises the tiniest constituents, quarks and gluons, that prevailed in the first few microseconds after the Big Bang.
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The present most challenging part of the research is pinning down the critical point of the QGP, where the shear viscosity over entropy ratio... -
Tiago Mendes Santos (University of Augsburg)8/1/22, 3:40 PM
The identification of universal properties from minimally processed data sets is one goal of machine learning techniques applied to statistical physics. Here, we study how the minimum number of variables needed to accurately describe the important features of a data set - the intrinsic dimension (Id) - behaves in the vicinity of phase transitions. We employ state-of-the-art nearest...
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Eugenio Megias (University of Granada)8/1/22, 3:40 PM
In the context of warped five-dimensional models formulated to understand the physics beyond the Standard Model (SM), we will discuss the prediction of a continuum of Kaluza-Klein modes on top of the SM zero modes, with a mass gap. We compute the Green’s functions for gauge bosons and describe how the continuum is reached from a discretized theory. We also study the Green's functions for the...
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Viljami Leino (TU Munich)8/1/22, 4:00 PM
We report our analysis for the static energy in (2+1+1)-flavor QCD over a wide range of lattice spacings and several quark masses, including the physical quark mass with ensembles of lattice-gauge-field configurations made available by the MILC Collaboration. We obtain results for the static energy out to distances of nearly 1fm, allowing us to perform a simultaneous determination of the...
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Lin Dai8/1/22, 4:00 PM
NLO evolution of the Jalilian-Marian-Iancu-McLerran-Weigert-Leonidov-Kovner (JIMWLK) equation with massless quarks was derived a few years ago. We make a step further to compute the evolution kernels focusing on the effects due to finite quark masses. To this goal, the light-cone wave function of a fast moving dilute hadronic projectile is computed up to ${\cal O}(g^3)$ in QCD coupling...
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Prof. Christian Fischer (University of Giessen)8/1/22, 4:00 PM
In this talk I will give an overview on recent results on the spectrum and properties of
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conventional mesons and exotic mesons (glueballs and four-quark states) as obtained in
the framework of Dyson-Schwinger and Bethe-Salpeter equations with particular focus on
states with the quantum numbers of a scalar.
I will discuss the spectrum of (quenched) glueballs and compare with results from... -
Aman Abhishek (Institute of Mathematical Sciences, Chennai, India)8/1/22, 4:00 PM
Lattice methods are spectacularly successful in measuring thermodynamic properties of strongly interacting matter described by Quantum Chromodynamics (QCD) at small baryon densities, however the existing lattice techniques cannot be easily extended to large densities due to the infamous "sign problem". In this work we have studied the hadronic phase of QCD using relativistic nuclear mean...
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Felipe Jose Llanes-Estrada (Univ. Complutense de Madrid)8/1/22, 4:05 PM
The flow of information in high-energy collisions has been recently investigated by various groups. Entanglement entropy of the proton becoming classical information entropy of pdfs, jet splitting affecting entropy, or the entropy in hadron decays have already been reported in the literature. Here we examine aspects of fragmentation functions in this context, including their entropy as...
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Rafael Delgado Lopez (Universidad Politécnica de Madrid)8/1/22, 4:05 PM
We analyze [1] the next to leading order (NLO) graviton-graviton scattering amplitude via the Inverse Amplitude Method (IAM), well known to low-energy QCD practitioners [2]. Like the electroweak chiral lagrangian, successfully used for low-energy QCD, the Einstein-Hilbert (EH) lagrangian is a non-linear and non-renormalizable theory whose most relevant operator is a dimension two one...
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Shi Qiu8/1/22, 4:10 PM
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Lukas Heinrich (TU Munich)8/1/22, 4:10 PM
The design of optimal test statistics is a key task in frequentist statistics and for a number of scenarios optimal test statistics such as the profile-likelihood ratio are known. By turning this argument around we can find the profile likelihood ratio even in likelihood-free cases, where only samples from a simulator are available, by optimizing a test statistic within those scenarios. We...
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Márcio Ferreira (University of Coimbra)8/1/22, 4:20 PM
The possible existence of hybrid stars is studied using several multi-quark interaction channels. The hadronic phase consists of an EOS with presently accepted nuclear matter properties and the quark model constrained by the vacuum properties of several light mesons. The dependence of several NS properties on the different quark interactions is analyzed. We show that the present constraints...
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Eric Braaten (Ohio State University)8/1/22, 4:20 PM
The existence of the X(3872) resonance extremely close to the D∗0 D0-bar threshold implies that neutral charm mesons have an approximate nonrelativistic conformal symmetry. Systems consisting of these mesons with small kinetic energies produced in a short-distance reaction are unparticles that can be created by an operator with definite scaling dimensions in a nonrelativistic conformal field...
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Michael Strickland (Kent State University)8/1/22, 4:20 PM
We present predictions for the second- and fourth-order curvature coefficients of the QCD phase transition line using the NNLO HTLpt-resummed thermodynamic potential. We present three cases corresponding to (i) $\mu_s = \mu_l = \mu_B/3$, (ii) $\mu_s=0$, $\mu_l = \mu_B/3,$ and (iii) $S = 0$, $Q/B = 0.4$, $\mu_l = \mu_B/3$. In all three cases, we find excellent agreement with continuum...
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Enrico Trotti (University Jan Kochanowski Kielce)8/1/22, 4:25 PM
We investigated the two scalar glueball
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scattering and the possible emergence of a bound state,
that we call glueballonium. The scalar glueball, the lightest particle of the
YM sector of QCD, has a lattice predicted mass of about
$m_{G}\simeq1.7$ GeV. We performed this study in the context of a
widely used dilaton potential, that depends on a single dimensionful parameter $\Lambda_G$.... -
Manuel Reichert (University of Sussex)8/1/22, 4:30 PM
Strongly-coupled dark sectors offer natural UV-complete extensions to the Standard Model that are challenging to access experimentally if they are only weakly coupled to the Standard Model. In this talk, I will present the possibility to test these dark sectors via gravitational-wave signals from the dark confinement phase transition. Due to the non-perturbative nature of the QCD-like sectors,...
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Yuya Tanizaki (YITP, Kyoto)8/1/22, 4:30 PM
Confinement of 4d gauge theories is usually the strong-coupling problem, and it is a difficult task to understand even its qualitative features. We are trying to develop its semiclassical understanding based on the idea of volume independence or adiabatic continuity. We conjecture that the strong-coupling regime of many 4d gauge theories is continuously connected to the weak-coupling theories...
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Cindy Mordasini (University of Jyväskylä)8/1/22, 4:40 PM
Collective phenomena have proved to be crucial probes to the transport properties of the quark-gluon plasma (QGP) created in ultrarelativistic heavy-ion collisions. One manifestation of these effects is the anisotropic azimuthal distribution of the particles produced in such collisions, which can be parametrized with two distinct degrees of freedom: the flow amplitudes v_n and the symmetry...
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Gilberto Tetlalmatzi-Xolocotzi (Siegen University)8/1/22, 4:50 PM
A well known technique to determine the decay amplitudes of non-leptonic B meson processes is QCD factorization. One of the main issues faced by this procedure is the analytical determination of power suppressed terms, for instance of annihilation topologies. In this talk we describe the extraction of the annihilation contributions from data. Our method is based on establishing a set of rules...
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Nicolò Jacazio (Bologna University)8/2/22, 9:00 AMPlenary Talk
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Michael Strickland (Kent State University)8/2/22, 9:30 AMPlenary Talk
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Jose R. Pelaez Sagredo (Universidad Complutense)8/2/22, 10:30 AMPlenary Talk
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Martin Hoferichter (University of Bern)8/2/22, 11:00 AMPlenary Talk
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Alexander Manashov (Hamburg University), Gorazd Cvetic (Universidad Tecnica Federico Sanata Maria), Ignazio Scimemi (Universidad Complutense Madrid), Krzysztof Cichy (Adam Mickiewicz University), Timothy Hobbs (Fermilab), Wang YuMing (remote) (Nankai U.)8/2/22, 11:30 AM
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Nikolay Kivel (Technical University Munich)8/2/22, 2:00 PM
In recent years, the BESII and BESIII collaborations have provided a lot of new and accurate data on baryon decays of S-wave charmonium states.
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These data indicate about sizable effects associated with power corrections to the well known leading-order approximation.
In my talk I will discuss a description of $J/psi\to B\bar B$ decays within the effective field theory framework (NRQCD &... -
Arkady Vainshtein8/2/22, 2:00 PM
We consider the massless charge-N Schwinger model and its deformation with two four-fermion operators. Without the deformations, this model exhibits chiral symmetry breaking without confinement. It is usually asserted that the massless Schwinger model is always deconfined and a string tension emerges only when a mass for the fermion field is turned on. We show that in the presence of these...
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Kaapo Seppänen8/2/22, 2:00 PM
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Jens Oluf Andersen (NTNU)8/2/22, 2:00 PM
In this talk, I will discuss the phase diagram at finite isospin density using
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two and three flavor chiral perturbation theory. I will also discuss the quark and pion condensates in the pion-condensed phase at T=0. Moreover, the pion-condensed phase has many interesting properties. At small chemical potentials, the system behaves as a dilute nonrelativistic Bose gas with an effective s-wave... -
ZHIWEI WANG (Lund University)8/2/22, 2:00 PM
In our previous work, we have been using Lattice results and Polyakov Loop model to explore the non-perturbative dark deconfinement-confinement phase transition and the generation of gravitational-waves in a dark Yang-Mills theory. In this work, We further include fermions with different representations in the dark sector. Employing the Polyakov-Nambu-Jona-Lasinio (PNJL) model, we discover...
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Nils Hermansson-Truedsson (Universität Bern)8/2/22, 2:00 PM
The recently observed 4.2-$\sigma$ tension between experimental measurement and theoretical prediction of the muon magnetic moment highlights the need for improved control of uncertainties. On the theoretical side, one of the contributions of interest is the hadronic light-by-light (HLbL). In the dispersive data-driven evaluation of the HLbL, certain short-distance constraints obtained by...
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Dr Alexander Manashov (Hamburg University)8/2/22, 2:00 PM
Using the approach based on conformal symmetry we calculate the two-loop coefficient function for the axial-vector contributions to two-photon processes in the MS¯ scheme. This is the last missing element for the complete next-to-next-to-leading order (NNLO) calculation of the pion transition form factor γ*γ→π in perturbative QCD. The corresponding high-statistics measurement is planned by the...
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Andreas Schmitt (University of Southampton)8/2/22, 2:20 PM
Chiral perturbation theory in the presence of the chiral anomaly predicts a so-called chiral soliton lattice in the presence of a magnetic field and a baryon chemical potential. This phase becomes unstable with respect to charged pion condensation if the magnetic field is further increased. I will point out that this instability bears a striking resemblance to the well-known instability at the...
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Alejandro Bris (Universidad Autónoma de Madrid)8/2/22, 2:20 PM
The peak region in heavy quark production is best described in boosted heavy quark effective theory, where its mass is integrated out. Within this approach the cross section can be factorized into hard, jet and soft func- tions, and large logs associated with the mass can be summed up to all orders.
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In this talk we present the computation of the missing pieces to get the bHQET thrust and... -
Mr Miguel Benitez-Rathgeb (University of Vienna)8/2/22, 2:20 PM
The discrepancy between the fixed-order (FOPT) and contour-improved (CIPT) expansions for tau hadronic spectral function moments has been a subject of intense investigations for more than a decade and constituted a major theoretical uncertainty for strong coupling determinations from hadronic tau decay spectral data. Recently, it has been shown by some of us that a discrepancy between the...
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Prof. Antonino Marciano (Fudan University)8/2/22, 2:25 PM
We propose a programme towards the understanding of confinement in QCD by means of the development of a geometrical version of the renormalization group flow for the Standard Model of Particle Physics. This is based on a stochastic version of the Ricci flow, which encodes both changes of topology and topological braiding. The proposed formalism enables the rescaling of fixed topologies through...
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Krzysztof Cichy (Adam Mickiewicz University)8/2/22, 2:25 PM
Recent years have brought a breakthrough for calculations of partonic distributions on a Euclidean lattice. In this talk, I will discuss our progress in extracting generalized parton distributions (GPDs) from the quasi-distribution approach. I will present both the leading-twist GPDs and our exploratory studies of selected twist-3 cases.
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Chiara De Martin8/2/22, 2:30 PM
One of the key challenges of hadron physics today is understanding the origin of strangeness enhancement in high-energy hadronic collisions, i.e. the increase of (multi-)strange hadron yields relative to non-strange hadron yields with increasing charged-particle multiplicity. What remains unclear is the relative contribution to this phenomenon from hard and soft QCD processes and the role of...
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91. Localisation of Dirac eigenmodes and confinement in gauge theories: the Roberge-Weiss transitionMatteo Giordano (Eötvös Loránd University, Budapest)8/2/22, 2:30 PM
Ample numerical evidence from lattice calculations shows a strong connection between the confining properties of gauge theories at finite temperature and the localisation properties of the low-lying Dirac eigenmodes. In this talk I review recent progress on this topic, including results for QCD at imaginary chemical potential ${\mu}_I/T = \pi$ at temperatures above the Roberge-Weiss transition...
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Kenji Fukushima (The University of Tokyo)8/2/22, 2:40 PM
[Reality of the Crosssover Scenarios]
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Because the ab-initio EOSs from the $\chi$EFT and the pQCD are both soft, it is unlikely to have a 1st-order phase transition to quark matter that would make the EOS even softer. These calculations as well as observational data and discussions of quark-hadron continuity / quarkyonic matter support the scenario of smooth and continuous realization of... -
Kazuhiro Watanabe (Subatech)8/2/22, 2:40 PM
Heavy quarkonium production of high transverse momentum ($p_T$) in hadronic collisions can be pursued in the QCD factorization formalism with heavy quarkonium fragmentation functions (FFs). The scale evolution of quarkonium FFs enables us to resum logarithmically enhanced corrections $\alpha_s\ln(p_T^2/m^2)$ with heavy quark mass $m$, which is an essential piece to explore the nonperturbative...
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Volodymyr Biloshytskyi (Institut für Kernphysik Johannes Gutenberg-Universität Mainz)8/2/22, 2:40 PM
The LHCb Collaboration has recently discovered a structure around 6.9 GeV in the double-$J/\psi$ mass distribution, possibly a first fully-charmed tetraquark state $X(6900)$. Based on vector-meson dominance (VMD) such a state should have a significant branching ratio of decaying into two photons ($\gamma \gamma$). We show that the published ATLAS data for the light-by-light scattering may...
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Christian Zimmermann (CPT Marseille)8/2/22, 2:50 PM
We perform lattice QCD simulations in order to calculate nucleon four-point functions, which can be used to extract Mellin moments of double parton distributions (DPDs). In this first study, we consider the first DPD Mellin moment of the unpolarized proton. We employ an $n_f = 2+1$ ensemble with pseudoscalar masses of $m_\pi = 355~\mathrm{MeV}$ and $m_K = 441~\mathrm{MeV}$, the results are...
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Dr David Müller (TU Wien)8/2/22, 2:50 PM
We develop a new approach to the initial state of heavy-ion collisions by extending the weak field approximation of the Color Glass Condensate formalism beyond the boost invariant limit [1]. Our analytical calculation yields surprisingly simple results for the color fields and the field strength tensor of the Glasma produced in the collision. As an explicit check, we demonstrate quantitative...
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Seyed Farid Taghavi (Physics department, Techincal Univresity of Munich)8/2/22, 3:40 PM
As a consequence of the theoretical improvements and the wide range of accurate experimental measurements, our understanding of the collective phenomena in heavy-ion collisions has advanced significantly over the past years. The Global Bayesian analysis played a substantial role in this advancement. In this talk, we present a global Bayesian analysis to infer the transport properties of...
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Stratos Pateloudis (University of Regensburg)8/2/22, 3:40 PM
The D0-matrix models of string theory have gained much attention in the latter years. I will discuss the physics one can extract from these using lattice-based simulations and the gauge/gravity duality to understand gravitational theories. In particular, I will show how the confinement-to-deconfinement transition corresponds to a topology change of the geometry in the supergravity theory and...
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Oleksii Ivanytskyi (University of Wroclaw)8/2/22, 3:40 PM
We outline the role that an early deconfinement phase transition from normal nuclear matter to a color superconducting quark-gluon plasma phase plays for the phenomenology of supernova explosions and binary neutron star mergers. To this end we extend the compact star equation of state (EoS) from vanishing to moderately high temperatures that become accessible in the CBM experiment at FAIR. We...
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Mr Jaime Norman (University of Liverpool (GB))8/2/22, 3:40 PM
This talk will summarise the experimental status on jet measurements in heavy-ion collisions.
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Vicent Mateu (University of Salamanca)8/2/22, 3:40 PM
In this talk I will discuss how one can be more differential in
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event-shape distributions by measuring the angle defined by the thrust axis
and the beam. As was shown in an earlier publication, the angular
dependence can be parametrised in terms of the well-known angular-averaged
cross section and the so called “angular” distribution. I will show that,
even though for jets initiated by... -
Lorenz von Smekal (Justus-Liebig University Giessen)8/2/22, 3:40 PM
In order to understand the puzzle of the free energy of an individual quark in QCD, we explicitly construct ensembles with quark numbers $N_V\neq 0\!\!\mod\! 3$, corresponding to non-zero triality in a finite subvolume $V$ on the lattice. We first illustrate the basic idea in an effective Polyakov-loop theory for the heavy-dense limit of QCD, and then extend the construction to full Lattice...
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Rafel Escribano (Universitat Autònoma de Barcelona (UAB) and Institut de Física d'Altes Energies (IFAE))8/2/22, 3:40 PM
We analyze the sensitivity of the rare decays $\eta^{(\prime)}\to\pi^{0}\gamma\gamma$ and $\eta^{\prime}\to\eta\gamma\gamma$ to GeV-signatures of a leptophobic $B$ boson.
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A controlled theoretical description of the amplitudes, based on vector meson dominance and the linear sigma model, along with the current experimental data, has allowed us place limits on the $B$ boson properties, i.e.... -
Giulia Ricciardi8/2/22, 3:40 PM
We review the status of tensions in the flavour sector, with particular
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attention to semileptonic BBB decays and ∣Vxb∣|V_{xb}|∣Vxb∣
determinations. -
Alexander Soloviev (TU Wien)8/2/22, 4:00 PM
Comparing the complex structure of the models of the quark gluon plasma is a useful way to better discern the physics following a heavy ion collision, in particular in the vicinity of a phase transition. In this talk, I will focus on quasinormal modes and the collisions of poles in the complex plane, first by using the chiral phase transition as an illustrative example...
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Francesco Di Clemente (University of Ferrara)8/2/22, 4:00 PM
Black hole–neutron star mergers (BHNS) are astrophysical phenomena of great interest because they not only produce gravitational-wave signals but also can have very energetic electromagnetic counterparts in particular in the form of kilonova explosions. The disruption of the neutron star produces the dynamical ejection of some material and the formation of a disk of hot matter around the black...
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Dr Harleen Dahiya (Department of Physics, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India)8/2/22, 4:00 PM
In the present work, we have studied the T-even subleading twist TMDs in the light-front quark-diquark model. Exclusively, we have studied their relations with the leading twist TMDs in the same model and, the question, how such relations are model (in)dependent, is discussed. We have also compared our results with the other quark models.
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Neus Penalva (IFIC (CSIC-UV))8/2/22, 4:00 PM
In the context of lepton flavor universality violation (LFUV) studies, we study different observables related to the $b\to c\tau \bar{\nu}_\tau$ semileptonic decays. These observables are expected to help in distinguishing between different NP scenarios. Since the $\tau$ lepton is very short-lived, we consider three subsequent $\tau$-decay modes, two hadronic $\pi\nu_\tau$ and $\rho\nu_\tau$...
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Timothy Hobbs (Fermilab)8/2/22, 4:05 PM
An array of high-priority HEP measurements are increasingly limited by the
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precision of nucleon and nuclear parton distribution functions (PDFs) and
related quantities. Curiously, as the accuracy of perturbative QCD
calculations steadily improves, there is a growing need for parallel
enhancements to control a variety of nonperturbative QCD, electroweak, and
methodological effects in... -
Mr David Mason (Swansea University)8/2/22, 4:05 PM
Beyond the standard model theories involving early universe first order phase transitions can lead to a gravitational wave background that may be measurable with improved detectors. Thermodynamic observables of the transition, such as the latent heat, determined through lattice simulations can be used to predict the expected signatures from a given theory and constrain physical models....
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Liliana Apolinário (LIP)8/2/22, 4:10 PM
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Roman Höllwieser (University of Wuppertal)8/2/22, 4:10 PM
We test a method for computing the static quark-antiquark potential in lattice QCD, which is not based on Wilson loops, but where the trial states are formed by eigenvector components of the covariant lattice Laplace operator. The runtime of this method is significantly smaller than the standard Wilson loop calculation, when computing the static potential not only for on-axis, but also for...
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Dr Ritam Mallick (Indian Institute of Science Education and Research Bhopal)8/2/22, 4:20 PM
The fundamental constituent of matter at high temperature and density has intrigued physicists for quite some time. Recent results from heavy-ion colliders have enriched the Quantum Chromodynamics (QCD) phase diagram at high temperature and low baryon density. However, the phase at low temperature and finite (mostly intermediate) baryon density remain unexplored. Theoretical QCD calculation...
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Peter Lowdon (Goethe University Frankfurt)8/2/22, 4:20 PM
Local quantum field theory (QFT) provides a framework for establishing the non-perturbative constraints imposed on finite-temperature correlation functions. In this talk I will discuss how the locality of fields has significant implications for the spectral properties of finite-temperature QFTs, in particular that the peak-broadening effects experienced by particle states can be directly...
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David Rodriguez Entem (University of Salamanca)8/2/22, 4:20 PM
Charged mesons in the charmonium mass region are a clear indication of the existence of states beyond the naive quark model. After the discovery of the Zc(3900) and Zc(4020) by the BESIII and Belle Collaborations, the Zcs(3985) was discovered by the BESIII Collaboration in the K+ recoil mass spectrum in e+e- collisions.
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A natural explanation of the Zc states in the quark model can be... -
Felix Springer (University of Liverpool)8/2/22, 4:30 PM
Many models of composite dark matter feature a first-order confinement transition in the early universe, which would produce a stochastic background of gravitational waves that will be searched for by future gravitational-wave observatories. I will present work in progress using lattice field theory to predict the properties of such first-order transitions. Targeting SU(N) Yang-Mills...
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Sergio Leal Gómez (Universität Wien)8/2/22, 4:30 PM
Factorization theorems are known to be extremely powerful tools in high-energy particle physics. Processes like SIDIS, Drell-Yan vector-boson production, Higgs-boson production through gluon fusion and $e^+e^-$ to jets and/or hadrons are just some examples of processes that have been thoroughly investigated by applying rigorous factorization formulae. Furthermore, if in these processes the...
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Andrey Sadofyev (University of Santiago de Compostela)8/2/22, 4:40 PM
Over the last decades, the theoretical picture of how hadronic jets interact with nuclear matter has been extended to account for the medium’s finite longitudinal length and expansion. However, only recently a first-principle approach has been developed that allows to couple the jet evolution to the medium flow and anisotropic structure in the dilute limit. In this talk, we will show how to...
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Dr Carlos Contreras (Universidad Tecnica Federico Santa Maria), Gian Paolo Vacca (3INFN Sezione di Bologna, DIFA, Bologna, Italia)8/2/22, 4:40 PM
In this talk, we will discuss the BFKL leading logarithmic resummation, relevant for the Regge limit behavior of QCD scattering amplitudes, in the IR regulated effective action, which satisfies exact functional renormalization group equations. Using this framework we study, in the high-energy limit and at larger transverse distances the transition to a much simpler effective local Reggeon...
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Mikhail Mikhasenko8/2/22, 4:40 PMParallel Talk
Stunning discoveries of the hadronic states that are manifestly different to the conventional meson and baryons have energized the field of spectroscopy in recent years. New exotic states keep appearing thanks to the excellent detector performance of the LHCb experiment and scrupulous data analysis. In this talk, fresh findings on the heavy-flavour pentaquarks and tetraquark families at LHCb...
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Yui Hayashi (YITP, Kyoto University)8/2/22, 4:40 PM
We study new symmetries of the Cardy-Rabinovici model and their dynamical applications. The Cardy-Rabinovici model is a 4d $U(1)$ gauge theory with electric and magnetic matters, which is a good playground for studying the dynamics of the Yang-Mills theory with $\theta$ angle. In this model, the electromagnetic $SL(2, \mathbb{Z})$ self-duality is not realized in a naive way. Still, the $SL(2,...
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Michał Marczenko (University of Wrocław)8/2/22, 4:40 PM
We analyze the recent astrophysical constraints in the context of a hadronic equation of state (EoS) in which the baryonic matter is subject to chiral symmetry restoration. We show that with such EoS it is possible to reconcile the modern constraints on the neutron star (NS) mass, radius, and tidal deformability (TD). We find that the softening of the EoS, required by the TD constraint of a...
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Dale Lawlor (National University of Ireland, Maynooth)8/2/22, 6:00 PM
We study the thermal transitions of dense two colour QCD with two flavours of Wilson fermions at a fixed chemical potential $\mu=443$MeV on a coarse isotropic lattice $a=0.18$fm.
The results on a larger lattice volume ($N_s=24$) are compared with earlier results with the same lattice spacing but a smaller lattice volume ($N_s=16$). Only small finite volume effects are found.We also...
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Dr Wolfgang Lucha (Austrian Academy of Sciences)8/2/22, 6:20 PM
In view of the usually encountered complexity of the quantum-field-theoretic approach to (two-particle) bound states by means of the homogeneous Bethe‒Salpeter equation, this formalism is frequently subjected to various simplifying approximations. If carried to its extremes, this procedure ultimately yields semirelativistic equations of motion believed to reproduce, at least coarsely, the...
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Mr Adeilton Dean Marques Valois (Bielefeld University)8/2/22, 6:20 PM
The magnetic fields generated in non-central heavy-ion collisions are among the strongest fields produced in the universe, reaching magnitudes comparable to the scale of strong interactions. Backed by model simulations, the resulting field is expected to be spatially modulated, deviating significantly from the commonly considered uniform profile. In this work, we present the next step to...
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Aminul Islam Chowdhury (University of Chinese Academy of Sciences)8/2/22, 6:20 PM
In this article [1], we have explored the very important quantity of lepton pair production from a hot and dense QCD medium in presence of an arbitrary magnetic field for simultaneous nonzero values of both the parallel and perpendicular components of momentum. As opposed to the zero magnetic field case (the so-called Born rate) or the lowest Landau level approximated rate, where only the...
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Dr Wolfgang Lucha (Austrian Academy of Sciences)8/2/22, 6:20 PM
Aiming at a self-consistent description of multiquark hadrons (such as tetraquarks, pentaquarks, hexaquarks, etc.) by means of QCD sum rules, we note that the entirety of contributions to two- or three-point correlation functions involving, respectively, two or one multiquark interpolating operators may be straightforwardly disentangled into two disjoint subsets comprising of unambiguously...
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Valeriya Mykhaylova (University of Wroclaw)8/2/22, 6:40 PM
We study the production of charm quarks in hot QCD medium utilizing the quasiparticle model (QPM). The deconfined matter is composed of the dynamical quarks and gluons dressed by the effective temperature-dependent masses. The temperature dependence is specified by a running coupling deduced from lattice QCD thermodynamics [1]. For the evolution of the QGP, we employ the results of...
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Viacheslav Tsaran (JGU Mainz)8/2/22, 6:40 PM
In heavy nuclei, the distribution of neutrons extends out further than the proton distribution forming a so-called “neutron skin”. An accurate experimental determination of the neutron skin thickness of heavy nuclei would provide a unique constraint on the symmetry energy of the nuclear Equation Of State, which strongly depends on poorly constrained three-body forces. Photons have an advantage...
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Benjamin Jaeger (University of Southern Denmark)8/2/22, 6:40 PM
We use complex Langevin simulations to study the QCD phase diagram with two light quark flavours. In this study, we use Wilson fermions with an intermediate pion mass of ~500 MeV. By studying thermodynamic quantities, in particular at lower temperatures, we are able to describe the equation of state.
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Rasmus Larsen8/2/22, 6:40 PM
We present a novel strategy to strongly reduce the severity of the sign problem, using line integrals along paths of changing imaginary action. Highly oscillating regions along these paths cancel out, decreasing their contributions. As a result, sampling with standard Monte-Carlo techniques becomes possible in cases which otherwise requires methods taking advantage of complex analysis, such as...
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Oleksandra Deineka (Johannes Gutenberg University of Mainz)8/2/22, 6:40 PM
We present a data-driven analysis of the $\gamma\gamma\to D^+D^-$ and $\gamma\gamma\to D^0\bar{D}^0$ reactions from threshold up to 4.0 GeV in the $D\bar{D}$ invariant mass. For the $S$-wave contribution, we adopt a partial-wave dispersive representation, which is solved using the $N/D$ ansatz. The left-hand cuts are accounted for using the model-independent conformal expansion. The $D$-wave...
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Juan José Gálvez-Viruet (Universidad de Granada)8/2/22, 7:00 PM
The complexity of strong dynamics has triggered many different techniques used depending on the phenomena to be described. Often, they rely on quantization over the plane of constant time in Minkowski space, but there are other possibilities: when quantization is carried out over a light front, the theory is manifestly invariant under the boost transformation along the direction of the...
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Paulo Silva (University of Coimbra)8/2/22, 7:00 PM
The ghost propagator in Landau gauge is studied at finite temperature below and above $T_c$ using lattice QCD simulations. For high temperatures, we find that the ghost propagator is enhanced, compared to the confined phase. The results suggest that the ghost propagator can be used to identify the phase transition, similarly to the gluon propagator case.
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Sami Demirci (University of Jyväskylä)8/2/22, 7:00 PM
We explore the consequences of gluonic hot spots in the proton for coherent and incoherent exclusive vector meson production cross sections. For the proton we use the Color Glass Condensate framework in the dilute limit with Gaussian hot spots of fluctuating color charges, which we are able to average over analytically. The cross sections are computed using the lowest order dipole model and...
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Feliciano de Soto Borrero (Universidad Pablo de Olavide)8/2/22, 7:00 PM
We report novel lattice QCD results for the three-gluon vertex from quenched lattice-QCD simulations. Using standard Wilson action, we have computed the three gluon vertex beyond the usual kinematic restriction to the symmetric (q² = r² = p²) and soft-gluon (p = 0) cases where it depends on a single momentum scale. We will present a detailed analysis of the asymmetric case (r² = q² ≠ p²) where...
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Toru Nishimura (Osaka U.)8/2/22, 7:20 PM
One of the main subjects in current nuclear physics is to reveal rich
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phase structure in high baryon density matter: the first-order chiral
transition line with the QCD critical point (CP), the color
superconducting (CSC) phase transition and so on. In the present
contribution, we calculate how the critical fluctuations that develop
around the QCD CP and CSC phase transition, affect... -
Maxim Virta8/2/22, 7:20 PM
Strongly coupled matter called quark–gluon plasma (QGP) is formed in heavy-ion collisions at RHIC and the LHC. The expansion of this matter, caused by pressure gradients, is known to be hydrodynamic. The computations show that the expanding QGP has a small shear viscosity to entropy density ratio (η/s), close to the known lower bound 1/4π. In such a medium one expects that jets passing through...
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Anna Önnerstad (University of Jyväskylä)8/2/22, 7:20 PM
When colliding heavy ions, like Pb-Pb at the LHC, it is known that long-range
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correlations is a collective flow effect of the quark gluon plasma produced in the
collision. Similar effects have also been observed in smaller collision systems such as
p-Pb and pp at the LHC. The origin of these long-range correlations in small systems,
and whether it is the same as in large collision systems,... -
Wilke van der Schee (CERN)8/2/22, 7:20 PM
We show that the recent ALICE measurement of the hadronic lead-lead cross section implies a small nucleon width, which is inconsistent with all state-of-the-art current global analyses of a wide set of experimental results. This inconsistency has several consequences for global analyses, both at a fundamental level as well as for quantities such as the bulk viscosity. The updated global...
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Sasa Prelovsek (University of Ljubljana/Regensburg, Jozef Stefan Institute)8/3/22, 9:00 AMPlenary Talk
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Swagato Mukherjee (Brookhaven National Laboratory)8/3/22, 9:30 AMPlenary Talk
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Kenta Itahashi (RIKEN)8/3/22, 10:30 AMPlenary Talk
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Hee Sok Chung (Technical University of Munich)8/3/22, 11:00 AMPlenary Talk
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Changzheng Yuan (IHEP, Beijing)8/3/22, 11:30 AMPlenary Talk
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Vladimir Braun (Regensburg University)8/4/22, 9:00 AMPlenary Talk
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Nazario Tantalo (University and INFN of Rome Tor Vergata)8/4/22, 9:30 AMPlenary Talk
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Son Dam Than (U. Chicago)8/4/22, 10:30 AMPlenary Talk
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Grant Mathews (University of Notre Dame)8/4/22, 11:00 AMPlenary Talk
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8/4/22, 11:30 AM
The present information about neutron star radii and masses imply that the EOS should not be too stiff around densities corresponding to the hyperon (and/or Delta) onset at 1.4 M_sun, but should then stiffen in order to reach (and exceed) masses of 2.0 M_sun at radii of about 12 km or larger.
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Is such a pattern compatible with a purely hadronic EOS? Or does it imply an early, strong... -
Paul Caucal (Brookhaven National Laboratory)8/4/22, 2:00 PM
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Nicolas Chamel (Université Libre de Bruxelles, Belgium)8/4/22, 2:00 PM
Abstract: Formed in the aftermath of gravitational core-collapse supernova explosions, neutron stars are the most compact observed stars. Their average density exceeds that found inside the heaviest atomic nuclei. According to our current understanding, a neutron star is stratified into distinct layers. The surface is probably covered by a metallic ocean. The solid layers beneath consist of a...
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José Antonio Oller Berber (Universidad de Murcia)8/4/22, 2:00 PMParallel Talk
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Masaaki Tomii8/4/22, 2:00 PM
Since our recent publication on direct CP violation and the Delta I = 1/2 rule in $K \to \pi\pi$ decay which was made with G-parity boundary conditions, we have revisited this problem with a conventional lattice setup employing periodic boundary conditions and two lattice spacings to check our previous result and to improve the precision. We show that the physical amplitude, which corresponds...
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Jeff Greensite (San Francisco State University)8/4/22, 2:00 PM
In gauge Higgs theories there is the possibility that there may exist localized excitations of the gauge and Higgs fields surrounding a static charge, and this would lead to excited states of what are usually described as "elementary" particles. This possibility is illustrated by a numerical simulation of the Landau-Ginzburg model of superconductivity, which in turn suggests certain...
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Judah Unmuth-Yockey (Fermilab)8/4/22, 2:00 PM
I will discuss how to use random quantum circuits to sample the average energy---as well as other observables---of a desired Hamiltonian away from the ground state. Then, using those samples, how to estimate the values of observables at low energy by extrapolation.
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Felipe Jose Llanes-Estrada (Univ. Complutense de Madrid)8/4/22, 2:00 PM
From the embedding of the Standard Model Effective Field Theory (SMEFT) in the more general Higgs Effective Field Theory (HEFT), we expose correlations among the coefficients of the latter that, if found to be violated in future data, would lead to the experimental falsification of the SMEFT framework. These are derived from the necessary symmetric point of HEFT and analiticity of the SMEFT...
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Santiago Peris (Univ. Autonoma de Barcelona)8/4/22, 2:00 PM
After a brief historical review of the $\alpha_s$ determination from tau decay and the difficulty of dealing with Duality Violations and the associated asymptotic nature of the OPE which was present in previous analyses, I will describe a new determination of the strong coupling constant based on an improved vector isovector spectral function. This spectral function results from combining...
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Laura Tolos (ICE & University of Stavanger)8/4/22, 2:20 PM
The FSU2H equation of state model, originally developed to describe cold neutron star matter with hyperonic cores, is extended to finite temperature [1]. Results are presented for a wide range of temperatures and lepton fractions, which cover the conditionsmet in protoneutron star matter, neutron star mergers and supernova explosions. It is found that the temperature effects on...
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Dr Vadim Baru (Ruhr University Bochum)8/4/22, 2:20 PM
In the 1960’s Weinberg proposed a way to discriminate between molecular and compact near-threshold bound states in the weak-binding limit. We discuss a generalisation of this criterion which can be employed to characterise the compositeness of bound, virtual and resonance states [1]. In addition, the relevant modifications in the presence of coupled channels, isospin violations and...
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James Ingoldby (ICTP (Trieste))8/4/22, 2:25 PM
We present a composite two-Higgs-doublet model (2HDM) constructed using dilaton effective field theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal SU(3) gauge field theory. A second Higgs doublet is naturally accommodated within the EFT. Using information from numerical lattice studies of the SU(3) gauge theory with eight fundamental (Dirac)...
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Gorazd Cvetic (Universidad Tecnica Federico Sanata Maria)8/4/22, 2:25 PM
Pinched Borel-Laplace sum rules are applied to ALEPH $\tau$-decay data. For the leading-twist ($D=0$) Adler function a renormalon-motivated extension is used, whose coefficient at $(\alpha_s/\pi)^5$ is taken according to the estimate $d_4=275 \pm 63$. Two terms of dimension $D=6$ are included in the truncated OPE ($D \leq 6$), in order to enable cancellation of the corresponding renormalon...
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Francisco Matorras Cuevas (Universidad de Cantabria)8/4/22, 2:30 PM
A simple clustering algorithm based on the euclidean distance among tracks is proposed to find and reconstruct the vertices from where the tracks are emerging. This technique uses the Variational Quantum Eigensolver to find the best combinatorial track to vertex association. The study uses the IBM Quantum Computing simulation framework qiskit to simulate the VQE algorithm. Two vertices have...
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Miguel Ángel Escobedo Espinosa (Instituto Galego de Física de Altas Enerxías (IGFAE))8/4/22, 2:30 PM
The medium that forms in a heavy-ion collision modifies the properties of jets traversing it. These modifications give substantial information about the nature of the medium and, therefore, they are one of the main focuses of the heavy-ion program at LHC. The influence of the medium into highly energetic partons depends on correlators of Wilson lines, which have been studied in perturbation...
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Dr Maksim Ulybyshev (University of Würzburg)8/4/22, 2:30 PM
We systematically explore real and complex saddle points for the Hubbard model on hexagonal lattice at zero and non-zero chemical potential. As a result of this study, we formulate the saddle point approximation to the path integral, which is essentially the gas of weakly interacting instantons. Since bosonic part of the action is Gaussian, Euclidean field equations for instantons should...
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Ryan Hill (University of Edinburgh)8/4/22, 2:30 PM
Kaons participate in a number of flavour-changing neutral current decays that are highly suppressed in the Standard Model, which are therefore expected to be sensitive to new physics. Calculating the long-distance contributions to these decay modes is a challenging theoretical problem, and crucial for channels where these effects are dominant. Lattice QCD can provide a first-principles...
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Petr Shternin (Ioffe Institute)8/4/22, 2:40 PM
We consider kinetic coefficients (thermal conductivity, shear viscosity, momentum transfer rates) of the magnetized neutron star cores within the framework of the Landau Fermi-liquid theory. We restrict ourselves to the case of normal (i.e. non-superfluid) matter and nucleonic composition. The magnetic field is taken to be non-quantizing. The presence of magnetic field leads to the tensor...
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Liping He (Universität Bonn)8/4/22, 2:40 PM
The double-charm tetraquark meson $T_{cc}^+(3875)$ can be produced in high-energy proton-proton collisions by the creation of the charm mesons $D^{*+} D^0$ at short distances followed by their binding into $T_{cc}^+$. The $T_{cc}^+$ can also be produced by the creation of $D^{*+} D^{*+}$ at short distances followed by their rescattering into $T_{cc}^+ \pi^+$. A charm-meson triangle...
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Oleksandra Deineka (Johannes Gutenberg University of Mainz)8/4/22, 2:50 PM
In my talk, I will present a data-driven coupled-channel analysis of the isoscalar S-wave {$\pi\pi,KK$} scattering using the partial-wave dispersion relations. The central result is the Omnes matrix, which does not have left-hand cuts, and therefore serves as the crucial input needed to study the final state interactions of any hadron processes where the system of two pions (and two kaons)...
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Joao Barata (BNL)8/4/22, 2:50 PM
The fast development of quantum technologies over the last decades has offered a glimpse to a future where the quantum properties of multi-particle systems might be fully understood. In the context of jet quenching, quantum computers might allow for a better understanding of medium induced jet modifications which are hard to extract using traditional approaches. In this talk, I will focus on...
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Jong-Wan Lee (Pusan National University)8/4/22, 3:40 PM
Sp(2N) gauge theories with fermonic matter provide an ideal laboratory to build up phenomenological models for physics beyond the standard model based on novel composite dynamics, where the models include composite Higgs along with partial top compositeness and composite dark matter. Without fermions they also supplement SU(N_c) gauge theories in the large N_c limit. In this talk we report on...
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José Antonio Oller Berber (Universidad de Murcia)8/4/22, 3:40 PM
In many physical applications, bound states and/or resonances are observed, which raises the question whether these states are elementary or composite. This talk deals with the calculation of the degree of composition (X) of bound or resonant states. We fist review the “classical” formalism to afford this problem for a bound state in nonrelativistic (NR) Quantum Mechanics (QM). Then, we show...
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Marcela Peláez8/4/22, 3:40 PM
The low-energy regime of QCD is known as the nonperturbative region of QCD because the standard perturbation theory based on the gauge-fixed Lagrangian by the Faddeev-Popov procedure finds a Landau pole at small scales. However, numerical simulations show that the coupling constant, i.e. the one obtained through Taylor's Theorem, remains finite in the infrared. In particular, the development...
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Ryutaro Tsuji (Tohoku University)8/4/22, 3:40 PM
We present results of nucleon structure studies measured in 2+1 flavor QCD with physical light quarks in large spatial extents of about 10 and 5 fm. Our calculations are performed on 2+1 flavor gauge configurations generated by the PACS Collaboration with the stout-smeared $O(a)$ improved Wilson fermions and Iwasaki gauge action at $\beta$=1.82 corresponding to the lattice spacing of 0.085 fm....
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Fiorella Fionda (University & INFN, Cagliari)8/4/22, 3:40 PM
Quarkonium production has long been identified as one of the golden signatures of deconfinement in heavy-ion collisions. Recently, the production of J/$\psi$ via (re)generation within the quark-gluon plasma (QGP) or at the phase boundary has been considered a key ingredient for the interpretation of quarkonium measurements in Pb$-$Pb collisions at the Large Hadron Collider (LHC). In addition,...
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Xiangpeng Wang8/4/22, 3:40 PM
We compute the QCD static force and potential using gradient flow at next-
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to-leading order in the strong coupling. The static force is the spatial derivative of the
static potential: it encodes the QCD interaction at both short and long distances. While
on the one side the static force has the advantage of being free of the O(ΛQCD) renormalon
affecting the static potential when computed... -
Dr Giles Strong (CMS, MODE, Padua U. and INFN, Padua)8/4/22, 3:40 PM
The recent MODE whitepaper*, proposes an end-to-end differential pipeline for the optimisation of detector designs directly with respect to the end goal of the experiment, rather than intermediate proxy targets. The TomOpt python package is the first concrete endeavour in attempting to realise such a pipeline, and aims to allow the optimisation of detectors for the purpose of muon tomography...
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Yuki Fujimoto (Institute for Nuclear Theory, University of Washington)8/4/22, 3:40 PM
The trace anomaly is a quantity of fundamental interest in field theories, which signals whether the underlying theory is conformal. In the context of neutron stars, we propose the trace anomaly for a new measure of the conformality as an alternative to the speed of sound; here we specifically consider the normalized trace anomaly, $1/3 - P/\varepsilon$, with $P$ and $\varepsilon$ being the...
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Dr Hiromasa Takaura (KEK)8/4/22, 4:00 PM
In this talk, I discuss our recent determination of nonperturbative matrix elements of heavy quark effective theory (HQET), $\bar{\Lambda}$ and $\mu_{\pi}^2$, which universally parametrize nonperturbative effects on various observables in heavy-light meson systems. In this determination, B meson masses and D meson masses are used as inputs. Using our renormalon subtraction method based on...
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Michelle Kuchera (Davidson College)8/4/22, 4:00 PM
Nuclear and particle physics research relies on accurate models which generate samples from conditional densities. An implicit quantile network (IQN) is a simple neural network-based machine learning model that has the ability to generate accurate samples from conditional, joint probability density functions. In this talk, we illustrate the capabilities of IQNs for simple generative tasks, as...
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Keita Sakai (Tohoku University)8/4/22, 4:00 PM
It is a fundamental question: what is the origin of the glueball masses? In the pure Yang-Mills theory, there is no mass scale in the classical level, while the breaking of scale invariance is induced by quantum effects. This is regarded as the trace anomaly, which is associated with the non-vanishing trace of the energy-momentum tensor (EMT) operator. In this context, the origin of the...
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William Jay (Massachusetts Institute of Technology)8/4/22, 4:00 PM
In this talk, I will review recent progress in lattice calculations of heavy flavor physics. The focus will be on decays of B- and D-mesons and on modern techniques for controlling systematic errors.
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Aleksi Kurkela (CERN and Univ. Stavanger)8/4/22, 4:00 PM
I discuss the recent progress in state-of-the art perturbative QCD calculations of the equation of state at large chemical potential. I describe why these calculations that are reliable at asymptotically high densities constrain the equation of state at neutron star densities, and describe how the theoretical calculations can be confronted with multimessenger observations to empirically...
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Mr Hiroki Ohata (YITP, Kyoto University)8/4/22, 4:00 PM
The QCD vacuum has been energetically studied by lattice QCD simulations
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with projection methods, such as Abelian projection and center projection.
We propose a new-type projection in the Coulomb gauge, in which gauge configurations are expanded in terms of Faddeev-Popov eigenmodes and only some eigenmodes are kept. With lattice QCD simulations at the quenched level, we apply this... -
Werner Porod (Uni. Würzburg)8/4/22, 4:05 PM
The AdS/CFT correspondence and its generalization to further examples of gauge/gravity duality provide a very useful approach into solving strongly coupled systems. Here, this will be put at work for the strongly coupled sector of Composite Higgs models. We will work out relation between masses of proposed states in Composite Higgs. As a cross check we compare these results to lattice...
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Junlee Kim (Jeonbuk National University)8/4/22, 4:05 PM
The $\rm{f}_{0}$(980) was observed years ago in $\pi\pi$ scattering experiments. Despite a long history of experimental and theoretical research, the nature of such a short-lived resonance is not understood and there is no consensus on its quark content.
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The $\rm{f}_{0}$(980) resonance is measured by ALICE using the $\pi\pi$ decay channel. In this contribution, the multiplicity dependence of... -
Hai-Tao Shu (Regensburg University)8/4/22, 4:10 PM
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Maria Gómez-Rocha (Universidad de Granada)8/4/22, 4:20 PM
The Renormalization Group Procedure for Effective Particles (RGPEP) provides the connection between low- and high-energy interactions in QCD through the construction of effective particles [1,2].
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The approach reproduces the correct behavior of the coupling constant at high energies (asymptotic freedom) [3] and, at the current level of approximation, the second-order solution of the... -
Prof. Gastao Krein (Instituto de Fisica Teorica, UNESP)8/4/22, 4:20 PM
I will discuss the prospects of using femtoscopy in high-energy proton-proton and heavy-ion collisions to learn about the low-energy J/psi-nucleon interaction. Femtoscopy is a technique that makes it possible to obtain spatio-temporal information on particle production sources at the femtometer scale through measurements of two-hadron momentum correlation functions. These correlation functions...
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Tyler Gorda (TU Darmstadt)8/4/22, 4:20 PM
At asymptotically high densities, the neutron-star-matter equation of state (EOS) must approach the EOS of beta-equilibrated QCD matter, as calculated directly within the fundamental QCD theory. This nontrivial constraint at high density, pressure, and chemical potential impacts the inference of the neutron-star-matter EOS at even lower densities. In this talk, I show how this constraint...
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Daiki Suenaga (RIKEN Nishina Center)8/4/22, 4:20 PM
Thanks to the recent development of lattice simulation techniques, numerical simulations on an anisotropic system, where the temporal and z directions are compactified while the remaining x and y directions are left infinitely large, have become possible. Such system is understood as an extension of finite-temperature one where only the temporal direction is compactified; namely, the...
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Dr Vanamali Shastry (Jan Kochanowski University)8/4/22, 4:25 PM
The standard model provides for the existence of hybrid states that contain a gluon in addition to the quark and the antiquark. The $\pi_1(1600)$ and the recently observed $\eta_1(1855)$ are examples of such exotic mesons. In the present work, we study the masses and the two-body decays of the members of the lightest hybrid nonet with quantum numbers $1^{-+}$ using a Lagrangian invariant under...
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Marco Knipfer (University of Alabama)8/4/22, 4:30 PM
The ability to accurately observe two or more particles within a very small time window has always been a great challenge in modern physics, while holding great potential. It opens the possibility for correlation experiments, as for example the ground-breaking Hanbury Brown-Twiss experiment, that can lead to physical insights. For low-energy electrons, one possibility is to use a micro-channel...
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Fabian Zierler (University of Graz)8/4/22, 4:30 PM
Abstract: The stable hadronic bound states in a hidden new non-Abelian gauge sector provide interesting candidates for strongly-interacting Dark Matter (DM). A particular example are theories in which DM is made up of dark pions which set the DM relic abundance through self-annihilation. One of the simplest realizations is a $Sp(4)$ gauge symmetry with two Dirac fermions. We will discuss its...
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Leszek Kosarzewski (Czech Technical University in Prague)8/4/22, 4:40 PM
Quarks of heavy flavors are useful tool to study quark-gluon plasma created in heavy-ion collisions. Due to their high mass and early production time, heavy quarks experience the entire evolution of the system created in these collisions. Open heavy flavor meson measurements are sensitive to the energy loss in the QGP, while quarkonia are sensitive to the temperature of the QGP as they...
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Thomas Oosthuyse (KU Leuven)8/4/22, 4:40 PM
The Casimir effect is a remarkable macroscopic feature of QED, while recent lattice studies have also shown its potential nontrivial consequences in QCD.
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In light of having a better understanding of the Casimir effect,
it is advantageous to have a self-contained path integral formulation of the phenomenon.
In this talk I will show how the Casimir effect between two uncharged plates in the... -
Aleksei Tanashkin (Pacific Quantum Center, Far Eastern Federal University)8/4/22, 4:40 PM
Compact U(1) gauge theory in 3+1 dimensions possesses the confining phase characterized by a linear raise of the potential between particles with opposite electric charges at sufficiently large inter-particle separation. This phenomenon is closely related to the color confinement in non-Abelian gauge theories such as QCD. In QED, the condensation of Abelian monopoles at strong gauge coupling...
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Prof. José Rodríguez-Quintero (University of Huelva)8/4/22, 4:45 PM
We will report on recent works featuring the parton distribution functions (DFs) of pion-like systems at experimental scales, following an approach which relies on the assumption that there is an effective charge defining an evolution scheme for DFs that is all-orders exact. Within this framework, strict lower and upper bounds on all Mellin moments of the valence-quark DFs are derived....
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Zohreh Davoudi (University of Maryland, College Park)8/5/22, 9:00 AMPlenary Talk
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Nobuo Sato (Jefferson Lab)8/5/22, 9:30 AMPlenary Talk
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Susan Gardner8/5/22, 10:30 AMPlenary Talk
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Gerrit Schierholz (DESY)8/5/22, 11:00 AMPlenary Talk
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Claudio Bonati (Pisa University), Daniel Nogradi (Eotvos University), Francesco D'Eramo (University of Padua), Guido Martinelli (Physics Department Sapienza Università di Roma)8/5/22, 11:45 AM
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Manfried Faber (Techn Univ Wien)8/5/22, 2:00 PM
The four types of maximally nontrivial calorons in SU(2)-QCD have characteristic spatial distribution of Polyakov loops. We describe a classical geometric model of an SU(2)-field with finite, stable solitonic solutions with the same structure as these four types of calorons. These solitons are characterised by two topological quantum numbers which can be compared with electric charge and spin....
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Markus Huber (Giessen University)8/5/22, 2:00 PM
The spectrum of QCD is expected to contain, besides bound states of quarks, also bound states of gluons. These glueballs can mix with other states that have the same quantum number. For pure Yang-Mills theory, on the other hand, glueballs are the only physical degrees of freedom which makes the picture much clearer. Using state-of-the-art, parameter-free solutions for the propagators and...
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Masanori Hanada8/5/22, 2:00 PM
In real-world QCD and its large-N generalization, it is not clear how confinement/deconfinement transition can be defined in terms of symmetry. Dynamical fundamental quarks spoil the center symmetry, and finite quark mass spoils the chiral symmetry. It is widely believed there is no phase transition in the literal sense. However, progress in holography and QCD-like theories suggest the...
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Greg Jackson (INT, University of Washington)8/5/22, 2:00 PM
Electromagnetic radiation from the quark-gluon plasma (QGP) is an important observable to be carefully considered in heavy ion collision experiments. At leading order in the electromagnetic coupling and all orders in the strong coupling, the photon and dilepton emission rates can both be determined from the QCD vector channel spectral function. In this talk, I will provide a status update from...
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David Blaschke (University of Wroclaw)8/5/22, 2:00 PM
We present a systematic investigation of the possible locations for the special point (SP), a unique feature of hybrid neutron stars in the mass-radius. The study is performed within the two-phase approach where the high-density (quark matter) phase is described by the constant-sound-speed (CSS) equation of state (EoS) and the nuclear matter phase around saturation density is varied from very...
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Francesco Giacosa (Jan Kochanowski University of Kielce)8/5/22, 2:20 PM
We discuss the status of both conventional and unconventional mesons between 1 and 2 GeV by using hadronic models that describe their masses, strong, and radiative decays. Various conventional quark-antiquark states are considered: some of them, such as the tensor mesons with $J^{PC}=2^{++}$ and mesons with $J^{PC}=3^{--}$, form well established nonets, while other, such as the axial-tensor...
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Violetta Sagun (University of Coimbra)8/5/22, 2:20 PM
We study the impact of asymmetric fermionic and bosonic dark matter on neutron star properties, including tidal deformability, maximum masses, radii, etc. The conditions at which dark matter particles tend to condensate in the core of the star or create an extended halo are presented. We show that dark matter condensed in a core leads to a decrease of the total gravitational mass and tidal...
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Matti Jarvinen (APCTP, Pohang)8/5/22, 2:25 PM
The gauge/gravity duality can be used to constrain QCD at intermediate densities and temperatures, where first-principles methods are not available. I will give an overview on recent results from the V-QCD model in this region, including predictions for the phase diagram, deconfinement transition, equation of state, and transport of dense QCD matter. If time permits, I will also discuss...
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Jan-Hendrik Otto (Justus-Liebig Universität Giessen)8/5/22, 2:30 PM
The High Acceptance DiElectron Spectrometer (HADES) is a versatile detector with particular focus on dielectron measurements in pion, proton, deuteron and (heavy-) ion-induced reactions using proton or nuclei targets in the SIS-18 energy range (1-2 GeV/nucleon). Its excellent particle identification capabilities also allow for the investigation of hadronic observables.
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The excess of... -
Volodymyr Chelnokov (Institute for Theoretical Physics, Goethe University, Frankfurt)8/5/22, 2:30 PM
The quark confinement in QCD is achieved by concentration of the chromoelectric field between the quark-antiquark pair into a flux tube, which gives rise to a linear quark-antiquark potential. We study the structure of the flux tube created by a static quark-antiquark pair in the pure gauge SU(3) theory, using lattice Monte-Carlo simulations. We calculate the spatial distribution of all three...
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Aritra Bandyopadhyay (University of Heidelberg)8/5/22, 2:40 PM
We present a calculation of the heavy quark transport coefficients in a quark-gluon plasma under the presence of a strong external magnetic field, within the Lowest Landau Level (LLL) approximation. In particular, we apply the Hard Thermal Loop (HTL) technique for the resummed effective gluon propagator, generalized for a hot and magnetized medium. Using the derived effective HTL gluon...
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Alessandro Drago (University of Ferrara)8/5/22, 2:40 PM
More than 20 years ago, Glendenning et al. (1995) proposed the existence of stable white dwarfs with a core of strange quark matter. More recently, by studying radial modes, Alford et al. (2017) concluded that those objects are unstable. We investigate again the stability of these objects by looking at their radial oscillations, and we assume that there is no phase transition between hadronic...
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AYSE KIZILERSU (UNIVERSITY OF ADELAIDE)8/5/22, 2:40 PM
The quark-gluon vertex is one of the basic building blocks of the strong interaction. It is an essential ingredient in functional approaches to nonperturbative quantum chromodynamics (QCD). In the literature, many studies of hadron phenomenology in the Schwinger-Dyson Equation framework have been carried out using the rainbow-ladder truncation, where the quark-gluon vertex is approximated by...
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Marek Gazdzicki (Goethe-University Frankfurt am Main and Jan Kochanowski University Kielce)8/5/22, 3:40 PM
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Arseniy Filin (Ruhr-Universität Bochum)8/5/22, 3:40 PM
Charge radii of the light nuclei depend on the charge distributions of the proton and the neutron and on the nuclear structure --- the way how nucleons are distributed inside the nucleus. We present a high-accuracy calculation of the nuclear structure for A=2,3,4 nuclei using the latest two- and three-nucleon forces and charge density operators derived up through the fifth order in the chiral...
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Anthony Grebe (Massachusetts Institute of Technology (MIT))8/5/22, 3:40 PM
Experimental searches for neutrinoless double-beta decay aim to determine whether the neutrinos are Dirac or Majorana fermions. Interpreting double-beta half-lives or experimental exclusions in terms of neutrino physics requires knowledge of the nuclear matrix elements, which are currently estimated from various nuclear models and carry a large model uncertainty. This talk will present...
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Pedro Bicudo (IST Lisboa)8/5/22, 3:40 PM
A metastable phase has important physical implications, since it may form vacuum bubbles detectable experimentally. It is well known that, due to spontaneous chiral symmetry breaking, there are two, or more, different QCD vacua. In the chiral limit, in the true vacuum, the pseudoscalar ground states are Goldstone bosons. The chiral invariant vacuum (at the top of the "Mexican hat") is an...
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Gaurang Parkar (University of stavanger)8/5/22, 3:40 PM
We present results on the in-medium interactions of static quark anti-quark pairs using realistic 2+1 HISQ flavor lattice QCD. Focus is put on the extraction of spectral information from Wilson line correlators in Coulomb gauge using four complementary methods. Our results indicate that on HISQ lattices, the position of the dominant spectral peak associated with the real-part of the interquark...
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Rasmus Larsen8/5/22, 3:40 PM
We compare the behavior of zero-modes of the overlap Dirac operator measured on the finite temperature 2+1 flavor lattice QCD configurations, generated with domain wall fermion discreitzation, to the local Polyakov Loop in the temperature range 1.1-1.2T_c, T_c being the pseudo-critical temperature. We show how the position of the zero-modes are anti-correlated to the local value of the Polyakov Loop.
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43. Energy-momentum tensor around a soliton in 1+1 dimensional $\phi^4$ model and its regularizationHiroaki Ito (Osaka University)8/5/22, 4:00 PM
It is known that 1+1 dimensional real scalar models with a negative mass squared have a soliton solution called the kink. We analyze the distribution of the energy-momentum tensor around the kink by incorporating the quantum correction up to leading order. The Fourier transform of the distribution corresponds to the gravitational form factors. We employ the collective coordinate method which...
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Dr Jiri Hosek (Department of Theoretical Physics, NPI Rez)8/5/22, 4:00 PM
Meissner effect for the chromoelectric field is the property of the non-perturbative QCD vacuum postulated to describe color confinement. We follow London's macroscopic theory of the Meissner effect for the magnetic field in superconductors and obtain the dual Meissner effect by fixing the phenomenological color gluon current assumed relevant at strong coupling. Its non-Abelian piece is simply...
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Philipp Gubler (Japan Atomic Energy Agency)8/5/22, 4:00 PM
There is presently no consensus on how the $\phi$ meson mass and width will change once it is put in a dense environment such as nuclear matter. While many theoretical works exist, connecting them with experimental measurements remains non-trivial task, as the $\phi$ meson in nuclear matter is usually produced in relatively high-energy pA reactions, which are generally non-equilibrium...
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Rafael Delgado Lopez (Universidad Politécnica de Madrid)8/5/22, 4:00 PM
We present work [1], in which we extend the publicly available quantumfdtd code. It was originally intended for solving the time-independent three-dimensional Schrödinger equation via finite-difference time-domain (fdtd) method and extracting the ground, first and second excited states. We extend it to (a) include the case of the relativistic Schrödinger equation and (b) add two optimized...
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Jack Holden (University of Southampton)8/5/22, 4:05 PM
Evidence has emerged recently in large N gauge theories that a `partially-deconfined’ phase can appear between confined and deconfined phases. In this phase, only a subset of colours deconfine. The centre symmetry is spontaneously broken in the partially-deconfined phase, raising the question of whether an order parameter exists that can also distinguish it from the completely-deconfined...
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Eberhard Klempt (Rheinische Friedrich-Wilhelms Universität Bpnn)8/5/22, 4:05 PM
Observation of the scalar glueball, evidence for the tensor glueball, how to search for the pseudoscalar glueball
The scalar glueball is observed in a coupled-channel analysis of the $S$-wave amplitude from BESIII data on radiative $J/\psi$ decays and further data. Ten scalar isoscalar resonances were required to fit the data. Five of them were interpreted as mainly singlet, five as...
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Alexander Soloviev (Stony Brook University), Alexander Soloviev (TU Wien)8/5/22, 4:10 PM
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Daniel Nogradi (Eotvos University)8/5/22, 4:10 PM
Motivated by axion physics, the topological susceptibility at high temperature was calculated by several lattice groups. A comparison with the semi-classical calculation at high temperature is meaningful and the details of the instanton calculation is reviewed. The correct over-all factor in MSbar and high precision parametrization of the temperature dependence is presented.
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Michael Coughlin (University of Minnesota)8/5/22, 4:20 PM
With the detection of compact binary coalescences and their
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electromagnetic counterparts by gravitational-wave detectors, a new
era of multi-messenger astronomy has begun. In this talk, I will
describe how GW170817, our first example in this new class, is being
used to constrain the unknown equation of state of cold supranuclear
matter, and to measure the Hubble constant. I will then... -
Feliciano de Soto Borrero (Universidad Pablo de Olavide)8/5/22, 4:20 PM
We report novel lattice QCD results for the position-space gluon propagator from quenched lattice-QCD simulations. Using standard Wilson action, we have computed the gluon propagator in position space with a detailed treatment of discretization errors.
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We discuss on the usefulness of the long-distance behavior of gluon propagator for constraining the deep infrared running of the gluon... -
Shi Qiu8/5/22, 4:20 PM
Quantum Chromodynamics permits the formation of charge-parity violating domains inside the medium produced in heavy-ion collisions resulting in an imbalanced quark chirality. With the precense of a strong magnetic field (as strong as $10^{15}$ T) produced by the spectator protons in off-central heavy-ion collisions, this would lead to an electric-charge separation along the direction of the...
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Ajaharul Islam (Kent State University)8/5/22, 4:20 PM
We generalize a complex heavy-quark potential model from an isotropic QCD plasma to an anisotropic one by replacing the Debye mass $m_D$ with an anisotropic screening mass depending on the quark pair alignment with respect to the direction of anisotropy.
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Such an angle-dependent mass is determined by matching the perturbative contributions in the potential model to the exact result obtained in... -
Stefan Wallner (Max Planck Institut for Physics)8/5/22, 4:30 PM
The excitation spectrum of light mesons; which are composed of up, down, and strange quarks; allows us to study QCD at low energies. While the non-strange light-meson spectrum is al- ready mapped out rather well, many predicted strange mesons have not yet been observed experimentally and many potentially observed states still need further confirmation. Hence, the strange-meson spectrum still...
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Claudio Bonati (Pisa University)8/5/22, 4:30 PM
We compute the topological susceptibility of high temperature QCD with 2+1 physical mass quarks using the multicanonical approach and the spectral projector estimate of the topological charge. This approach presents reduced lattice artifacts with respect to the standard gluonic one, and makes it possible to perform a reliable continuum extrapolation.
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José Antonio Oller Berber (Universidad de Murcia)8/5/22, 4:30 PM
We study graviton-graviton scattering in partial-wave amplitudes after unitarizing their Born terms. In order to apply S-matrix techniques, based on unitarity and analyticity, we introduce an S-matrix associated to this resummation that is free of infrared divergences. This is achieved by removing the diverging phase factor calculated by Weinberg that multiplies the S matrix, and that stems...
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Dr Deeptak Biswas (The Institute of Mathematical Sciences (IMSc))8/5/22, 4:40 PM
We study the chiral condensate for 2+1 flavor QCD with physical quarks within a non-interacting Hadron Resonance Gas (HRG) model. By including the latest information on the mass variation of the hadrons with respect to the light quark mass, from lattice QCD and chiral perturbation theory, we show that it is possible to quite accurately account for the chiral crossover transition even within a...
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Orlando Oliveira (University of Coimbra)8/5/22, 4:40 PM
The photon propagator for the pure gauge theory is revisited using large lattices. For the confined case we show that it has an associated linearly growing potential, it has a mass gap, that is related to the presence of monopoles, and its spectral function violates positivity. In the deconfined phase, our simulations suggest that a free field theory is recovered in the thermodynamic limit.
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Prof. Larissa Bravina (UiO), ZhiLei She (UiO)8/5/22, 4:40 PM
Thermal production of sexaquarks are calculated in different Statistical Models.
Sexaquarks are a hypothetical low mass, small radius uuddss dibaryon which has been proposed recently and especially as a candidate for Dark Matter [1,2]. The low mass region below 2 GeV escapes upper limits set
from experiments which have searched for the unstable, higher mass H-dibaryon and did not find...
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Daniel Salvat (Indiana University)8/6/22, 9:00 AMPlenary Talk
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Antonio Pineda8/6/22, 9:30 AMPlenary Talk
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Derek Leinweber (CSSM, University of Adelaide)8/6/22, 10:30 AMPlenary Talk
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Nora Brambilla (Technical University Munich)8/6/22, 11:00 AMPlenary Talk
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Dr William Newton (Texas A&M University-Commerce)
We present steps towards a consistent synthesis of nuclear observables such as neutron skins, dipole polarizabilities and nuclear masses, and neutron star observables such as radii and tidal deformabilities. Our models are parameterized by five independent variables: the first three parameters in the density expansion of the symmetry energy and two indices for the polytropic equations of state...
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Prof. Sedigheh Deldar (University of Tehran)
We discuss the existence of nets of vortices and monopoles for the SU(3) gauge group in the infrared regime of QCD. By appropriate gauge transformations, magnetic defects like monopoles, vortices and nets in SU(3) gauge group are studied in terms of its SU(2) subgroups. The resulted Lagrangian explicitly shows the above magnetic defects and their interactions. Confinement properties like...
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Jose R. Pelaez Sagredo (Universidad Complutense)
I will review the present status and recent progress on light-meson scattering analyses, by means of dispersive or analytic methods. The recent application of these model independent techniques have settled the controversy about the existence and parameters of long debated resonances. I will thus review the status and recent changes on our knowledge about the resonances observed in these...
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