Chemical Freeze-out Parameters via a Non-perturbative QCD Approach

2015/10/26 by Jing Chen, Fei Gao, Chen, Jing +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1510.07543

Abstract

By analyzing the calculated baryon number susceptibility ratios χ₁^B/χ₂^B and χ₃^B/χ₁^B in two-flavor system via the Dyson-Schwinger equation approach of QCD, we determine the chemical freeze-out temperature and baryon chemical potential in cases of both thermodynamic limit and finite size. We calculate the center-of-mass energy dependence of the χ₄^B/χ₂^B (κσ²) at the freeze-out line and find an excellent agreement with experimental data in √S_NN ≥ 19.6 GeV region when taking into account the finite size effect. Our calculations indicate that the κσ² exhibits a non-monotonic behavior in lower collision energy region.

Related

• Chemical freeze-out parameters via functional renormalization group approach
• Dynamical Interpretation of Chemical Freeze-Out Parameters
• Formation of hadrons at chemical freeze-out
• Systematics of the chemical freeze-out line in the high baryon density regime explored at SIS100
• Energy and centrality dependence of chemical freeze-out parameters from\n models