2021/01/26 by Dongfang Wang, D. F. Wang, S. Zhang +3
Earth and Planetary Sciences · Physics and Astronomy · #Baryon #Hadron #Heavy ion #High-Energy Particle Collisions Research #High-pressure geophysics and materials #Ion #Kinetic energy #Nuclear physics #Omega #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Rapidity #Relativistic Heavy Ion Collider #Strangeness #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.103.024901
published as Phys. Rev. C 103, 024901 (2021) · 8 pages, 2 tables, 7 figures; Phys. Rev. C, in press
arxiv created 2021/01/26 · openalex publication_date 2021/02/01 · arxiv updated 2021/02/10 · openalex created_date 2021/02/15 · openalex updated_date 2026/08/05
The system size dependence of baryon-strangeness (BS) correlation (CBS) is investigated with a multiphase transport (AMPT) model for various collision systems from 10B+10B, 12C+12C, 16O+16O, 20Ne+20Ne, 40Ca+40Ca, 96Zr+96Zr, and 197Au+197Au at Relativistic Heavy Ion Collider energies √sNN of 200, 39, 27, 20, and 7.7 GeV. Both effects of hadron rescattering and a combination of different hadrons play a leading role in baryon-strangeness correlation. When the kinetic window is limited to absolute rapidity |y|>3, these correlations tend to be constant after the final-state interaction, whatever kind of hadron subset we choose based on the AMPT framework. The correlation is found to smoothly increase with baryon chemical potential \ensuremathμB, corresponding to the collision system or energy from the quark-gluon-plasma-like phase to the hadron-gas-like phase. In addition, the influence of initial nuclear geometric structures of \ensuremathα-clustered nuclear collision systems of 12C+12C as well as 16O+16O collisions is discussed but the effect is found negligible. The current model studies provide baselines for searching for the signals of the quantum chromodynamics phase transition and critical point in heavy-ion collisions through the BS correlation.