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.

5 pages with 5 figures

References in corpus (7)

• The QCD equation of state with dynamical quarks
• In-Medium Spectral Functions of Vector- and Axial-Vector Mesons from the Functional Renormalization Group
• 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)

• Measurement of f${}_1$(1285) production in pp collisions at $\sqrt{\text{s}}$ = 13 TeV