arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2104.00628nucl-th
收藏

LHC能重离子碰撞的电荷平衡函数

Charge Balance Functions for Heavy-Ion Collisions at LHC Energies

Scott Pratt, Christopher Plumberg

摘要:

大型强子对撞机上的重离子碰撞提供了研究夸克-胶子等离子体区域的条件,与相对论重离子对撞机上的对撞相比,这些区域达到更高的温度,持续更长的时间。这种延长的持续时间允许电荷守恒的相关性在夸克-胶子等离子体阶段更好地分离,从而更好地区别于强子阶段或强子化过程中发展的相关性。在这项研究中,电荷平衡功能的相对快度和方位角和索引的物种被认为是分仓。一个详细的理论模型,在整个事件的电荷相关性的演变进行比较,从ALICE协作的初步结果。与实验的比较提供了深入了解碰撞过程中的化学和扩散的演变。提出了一种平衡函数的比率,以更好地隔离扩散的影响,从而更好地约束扩散率。

英文摘要:

Heavy-ion collisions at the LHC provide the conditions to investigate regions of quark-gluon plasma that reach higher temperatures and that persist for longer periods of time compared to collisions at the Relativistic Heavy Ion Collider. This extended duration allows correlations from charge conservation to better separate during the quark-gluon plasma phase, and thus be better distinguished from correlations that develop during the hadron phase or during hadronization. In this study charge balance functions binned by relative rapidity and azimuthal angle and indexed by species are considered. A detailed theoretical model that evolves charge correlations throughout the entirety of an event is compared to preliminary results from the ALICE Collaboration. The comparison with experiment provides insight into the evolution of the chemistry and diffusivity during the collision. A ratio of balance functions is proposed to better isolate the effects of diffusion and thus better constrain the diffusivity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑