19th International Conference on QCD in Extreme Conditions (XQCD 2023)

Session

Parallel session C

26 Jul 2023, 14:00

Room E.10A (Department of Physics (University of Coimbra))

55. Recent results from NA61/SHINE on the onset of deconfinement studies and particle production

Maja Katarzyna Mackowiak-Pawlowska (Warsaw University of Technology (PL))

26/07/2023, 14:00

Talk

NA61/SHINE at the CERN SPS is a fixed-target experiment pursuing a rich physics program. The main goal of the NA61 ion program is to explore the most interesting region of the phase diagram of strongly interacting matter. Within the expected (T - mu_B) interval we plan to study the properties of the onset of deconfinement and to search for the signatures of the critical point. Such a 2D scan...

66. K- nunleon/nuclei interactions studies by AMADEUS at DAFNE

Dr Kristian Piscicchia (CREF, LNF (INFN))

26/07/2023, 14:25

Talk

K- nunleon/nuclei interactions studies by AMADEUS at DAFNE

Experimental investigation of the strong interaction in the low-energy regime is mandatory to constrain models of the low-energy meson-baryon interaction, with implications in several fields, ranging from the search for exotic mesic nuclear bound states, to the structure of compact astrophysical objects like the neutron stars. 
In...

71. Transient effects of charge diffusion on electromagnetic field in heavy-ion collision

Ashutosh Dash (Frankfurt University)

26/07/2023, 14:50

Talk

We study charge diffusion in relativistic resistive second-order dissipative magnetohydrodynamics. In this theory, charge diffusion is not simply given by the standard Navier-Stokes form of Ohm’s law, but by an evolution equation which ensures causality and stability. This, in turn, leads to transient effects in the charge-diffusion current, the nature of which depends on the particular values...

77. Observable consequences of partial thermalization in relativistic nuclear collisions

Prof. George Moschelli (Lawrence Technological University)

26/07/2023, 15:45

Talk

The discovery of flow-like azimuthal correlations in pA and high-multiplicity pp collisions raises profound questions about the onset of collective flow and its relation to hydrodynamics. We seek independent experimental information on the degree of thermalization in order to identify those hydrodynamic collision systems in which flow is sensitive to equilibrium QCD properties. We aim to...

90. Insights from D-meson femtoscopy using T-matrix calculations

Juan Torres-Rincon (Universitat de Barcelona)

26/07/2023, 16:10

Talk

In this presentation I will unveil our initial findings on $D$-meson / light-meson femtoscopy. Our analysis employs unitarized effective hadron interactions derived from an off-shell $T$-matrix calculation in a coupled-channel framework. We have obtained the correlation function of heavy-light mesons accounting for Coulomb interaction in the relevant channels, and have analyzed the impact of...

23. Propagation of gauge fields in hot and dense plasmas at higher orders

Andreas Ekstedt

27/07/2023, 16:00

Talk

Thermal field theory is indispensable for describing hot and dense systems. Yet perturbative calculations are often stymied by a host of energy scales, and tend to converge slowly. This means that precise results require the apt use of effective field theories. In this talk I describe how the effective description of slowly varying gauge fields, known as hard thermal loops, can be extended to...

99. Resummation of the soft and hard logarithms in Cold and Dense QCD

Loïc Fernandez (Helsinki Institute of Physics, University of Helsinki)

27/07/2023, 16:25

Talk

We will discuss the recent developments in perturbative QCD at zero temperature and high barionic densities notably how can we effectively resum the so-called soft, hybrid, and hard leading logarithms. We pave the way to the resummation of the next-to-leading logarithms by identifying the anomalous dimensions of the mixed sector in QCD.

By identifying {\em massive} renormalization group...

50. Massive thermal loop integrals and bulk viscosity in quark matter

Saga Säppi (Technical University of Munich (TUM))

27/07/2023, 17:15

Talk

Observations of neutron stars and their mergers have opened a new avenue and motivation for studying QCD matter at very high densities. When studying neutron star mergers in particular, it is vital to understand effects of both the temperature and, for transport quantities such as the bulk viscosity, the quark masses.

Unfortunately, in loop calculations at finite density and/or temperature,...

86. Estimating transport coefficients of strongly interacting matter with an extended NJL model

João Moreira (UBI, CFisUC)

27/07/2023, 17:40

Talk

We present some results for transport coefficients in strongly interacting mattter in the light quark sector (up, down and strange) obtained with a novel regularization of the quark polarization functions using an extended version Nambu--Jona-Lasinio model which includes a 't Hooft determinant and eight quark interactions at finite temperature and chemical potential. This new regularization...