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arXiv 2006.13358nucl-thhep-phnucl-ex
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用$p_T$相关流涨落探测重离子碰撞初态结构

Probing the structure of the initial state of heavy-ion collisions with $p_T$-dependent flow fluctuations

Maurício Hippert, João Guilherme Prado Barbon, David Dobrigkeit Chinellato, Matthew Luzum, Jorge Noronha, Tiago Nunes da Silva, Willian Matioli Serenone, Jun Takahashi

摘要:

初始状态的几何形状和各向异性流之间的连接可以量化,通过一个完善的映射之间的$p_T$集成流谐波和累积量的初始横向能量分布。在本文中,我们成功地扩展这个映射,也包括$p_T$ -差分流。在这样做的过程中,我们发现,各向异性流的subleading主成分可以揭示以前未观察到的流体动力学响应的细节,在线性和非线性制度。最重要的是,我们表明,它们提供了新的信息,在相对论性重离子碰撞的初始阶段存在的小尺度结构。

英文摘要:

The connection between initial-state geometry and anisotropic flow can be quantified through a well-established mapping between $p_T$-integrated flow harmonics and cumulants of the initial transverse energy distribution. In this paper we successfully extend this mapping to also include $p_T$-differential flow. In doing so, we find that subleading principal components of anisotropic flow can reveal previously unobserved details of the hydrodynamic response, in both the linear and the nonlinear regimes. Most importantly, we show that they provide novel information on the small-scale structures present in the initial stage of relativistic heavy-ion collisions.

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。

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