XVIth Quark Confinement and the Hadron Spectrum

K1/K∗ enhancement in heavy-ion collisions and the restoration of chiral symmetry

19 Aug 2024, 16:40

20m

M4

Oral D: Deconfinement Deconfinement

Speaker

Ms HAESOM SUNG (Yonsei University)

Description

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 including non-unity pion and kaon fugacities reduces slightly the $K_1/K^{\ast }$ enhancement found in previous study due to chiral symmetry restoration, adding temperature-dependent $K_1$ mass leads to a substantial further reduction of the $K_1/K^{\ast }$ enhancement. However, the final $K_1/K^{\ast }$ ratio in peripheral collisions still shows a factor of 2.4 enhancement compared to the case without chiral symmetry restoration, confirming its use as a good signature for chiral symmetry restoration in the hot dense matter produced in relativistic heavy ion collisions.

Presentation materials

Haesom Sung_0819.pdf