Is $K_1/K^{\ast }$ enhancement in heavy ion collisions a signature of chiral symmetry restoration?

Abstract

We extend the recent study of $K_1/K^{\ast }$ enhancement as a signature of chiral symmetry restoration in heavy ion collisions at the Large Hadron Collider (LHC) via the kinetic approach to include the effects due to non-unity hadron fugacities during the evolution of produced hadronic matter and the temperature-dependent $K_1$ mass. Although the effect of non-unity fugacity only slightly reduces the $K_1/K^{\ast }$ enhancement due to chiral symmetry restoration, the inclusion of the temperature-dependent $K_1$ mass leads to a substantial reduction in the $K_1/K^{\ast }$ enhancement. However, the final $K_1/K^{\ast }$ ratio in peripheral collisions still shows a more than factor of two enhancement compared to the case without chiral symmetry restoration and thus remains a good signature for chiral symmetry restoration in the hot dense matter produced in relativistic heavy ion collisions.

arXiv comment5 pages with 5 figures

References in corpus (18)

• The QCD equation of state with dynamical quarks
• Chiral effective model with the Polyakov loop
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Chiral crossover in QCD at zero and non-zero chemical potentials
• Production of charged pions, kaons and (anti-)protons in Pb-Pb and inelastic pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Confronting LHC data with the statistical hadronization model
• Lattice QCD at non-zero temperature
• Resolving the Antibaryon-Production Puzzle in High-Energy Heavy-Ion Collisions
• In-Medium Spectral Functions of Vector- and Axial-Vector Mesons from the Functional Renormalization Group
• The statistical model in Pb-Pb collisions at the LHC
• Chemical freeze-out in relativistic heavy-ion collisions
• Nuclear chiral dynamics and phases of QCD
• Reduction of the $K^{\ast }$ meson abundance in heavy ion collisions
• Dilepton production in a schematic causal viscous hydrodynamics
• Vector meson mass in the chiral symmetry restored vacuum
• $K_1/K^{\ast }$ enhancement as a signature of chiral symmetry restoration in heavy ion collisions
• The pion-kaon scattering amplitude and the $K^0(700)$ and $K^{\ast }(892)$ resonances at finite temperature
• Hadrons at high temperature: an update from the FASTSUM collaboration

Cited by in corpus (1)

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