Strangeness in Quark Matter 2022 (SQM 2022)

Modification of hadron multiplicity ratios at the chiral phase transition

POS-BLK-20

14 Jun 2022, 17:10

1h 50m

Metaverse

Board: BLK-20

Poster Bulk matter phenomena, QCD phase diagram, and Critical point Poster

Speaker

Thiranat Bumnedpan (Suranaree University of Technology)

Description

We investigate the impact of a first-order chiral phase transition and critical point on hadron multiplicity ratios. We model the dynamical expansion of the hot and dense matter created in a heavy ion collision with a Bjorken hydrodynamics expansion coupled to the explicit evolution of the chiral order parameter at center-of-mass energies from 2 to 10 GeV. Hereby, the chiral dynamics is implemented using a Langevin equation including dissipation and noise. We find a strong enhancement of the entropy-per-baryon S/A at lowest energies which is created at the non-equilibrium first-order phase transition. By mapping the initial and final S/A to a hadron resonance gas, we are able to quantify the shift of hadron multiplicity ratios.

Presentation materials

POS-BLK-20.pdf