净重子数分布与QCD相图
Net-baryon number distributions and the QCD phase diagram
- NRC ”Kurchatov Institute” - IHEP(核研究所)
- Pacific Quantum Center, Far Eastern Federal University(远东联邦大学太平洋量子中心)
机构由 AI 辅助整理,请以论文原文为准。
AI总结:
本文在巨正则系综下分析STAR净质子分布,首次直接提取重子化学势,结果与热模型及HRG拟合一致,并提出火球热化判据。
AI中文摘要:
本文在巨正则系综方法下分析了STAR合作组获得的净质子多重数分布。首次应用了一种直接从这些分布中确定重子化学势$\mu_B$的方法。所得到的$\mu_B$值既与先前使用统计热模型确定的值一致,也与基于强子共振气体(HRG)模型的拟合结果一致。我们提出了一个用于判断重核碰撞中产生的火球是否热化的判据。
英文摘要:
Net-proton multiplicity distributions obtained by the STAR collaboration are analyzed in the grand canonical approach. A method of finding the baryon chemical potential $μ_B$ immediately from such distributions is applied for the first time. The obtained values of $μ_B$ are consistent both with those determined earlier using the statistical thermal model and with the results of the fit based on the Hadron Resonance Gas (HRG) model. We propose a criterion of thermalization of fireballs produced in heavy-nuclei collisions.