论文标题
高能核冲突中非常低的横向动量区域中的非平衡成分
Non-equilibrium components in very low transverse momentum region in high-energy nuclear collisions
论文作者
论文摘要
我们在$ \ sqrt {s _ {\ Mathrm {nn}}}} = 2.76 $ TEV上分析了Pb+Pb碰撞，并具有基于动态核心图片的新型框架，该框架描述了来自平衡和非平衡组件的粒子生产。我们指出，在非常低的横向动量（$ p_ {t} $）区域以非平衡组件贡献的可能性，并表明此类贡献显着影响$ p_ {t} $ - 集成的四颗粒累积液。当人们使用基于相对论流体动力学的复杂动力学模型从实验数据中提取夸克 - 杜伦等离子体的特性时，这些结果强烈表明了非平衡成分的必要性。
We analyze Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with a novel framework based on the dynamical core--corona picture that describes particle productions from both equilibrium and non-equilibrium components. We remark the possibility of the contribution from non-equilibrium components at very low transverse momentum ($p_{T}$) region and show that such contributions significantly affect $p_{T}$-integrated four-particle cumulants. These results strongly suggest the necessity of non-equilibrium components when one extracts properties of the quark-gluon plasma from experimental data using sophisticated dynamical models based on relativistic hydrodynamics.
