Collective flow and fluid behavior in p/d/3He+Au collisions at GeV* * Supported in part by the National Natural Science Foundation of China (12247107, 12075007, 12147173 (Baochi Fu))

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-10-01 DOI:10.1088/1674-1137/ad5ae8

Zeming Wu, Baochi Fu, Shujun Zhao, Runsheng Liu, Huichao Song

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引用次数: 0

Abstract

By varying the intrinsic initial geometry, p/d/³He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) provide a unique opportunity to understand the collective behavior and probe possible sub-nucleon fluctuations in small systems. In this study, we employed the hybrid model

under TRENTo initial conditions to study the collective flow and fluid behavior in p/d/³He+Au collisions. With fine-tuned parameters,

can describe the

and

data from the PHENIX and STAR collaborations. However, for certain parameter sets with initial sub-nucleon fluctuations, the hydrodynamic simulations already go beyond their limits with an average Knudsen number

clearly larger than unity. Our calculations demonstrate that, for a meaningful evaluation of the fluid behavior in small systems, model simulations must also pay attention to the validity range of hydrodynamics.

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GeV p/d/3He+Au对撞中的集体流和流体行为* * 国家自然科学基金部分资助（12247107、12075007、12147173（傅抱石）

相对论重离子对撞机（RHIC）上的 p/d/3He+Au 对撞通过改变固有的初始几何形状，为了解小系统中的集体行为和探测可能的亚核子波动提供了一个独特的机会。在这项研究中，我们采用了 TRENTo 初始条件下的混合模型来研究 p/d/3He+Au 对撞中的集体流动和流体行为。在参数微调的情况下，可以描述 PHENIX 和 STAR 合作的数据。然而，对于某些具有初始亚核子波动的参数集，流体力学模拟已经超出了它们的极限，平均克努森数明显大于一。我们的计算表明，为了对小系统中的流体行为进行有意义的评估，模型模拟还必须注意流体力学的有效范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.