Investigation of the initial geometry description using collectivity in the AMPT model

IF 0.8 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
HyunJi Lim, SangHoon Lim
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引用次数: 0

Abstract

The motivation of geometry engineering with proton, deuteron, and helium-3 projectiles at relativistic heavy-ion collider (RHIC) is to investigate the relation between initial geometry and final momentum anisotropy, which is thought to be strong evidence of quark–gluon plasma. PHENIX Collaboration shows a hierarchy of elliptic and triangular flow in p/d/\(^{3}\)He+Au collisions that follow a hierarchy of eccentricity described by the Monte Carlo Glauber model, whereas STAR Collaboration shows a different trend in the triangular flow results. For a complete understanding of the results, a detailed microscopic description, such as sub-nucleon geometry and area of energy deposition, becomes more important. A multiphase transport model (AMPT) can qualitatively describe the collective behavior with scatterings at partonic and hadronic stages. We utilize the AMPT to simulate small systems and investigate the relation between initial geometry and final momentum anisotropy with different geometry descriptions.

Abstract Image

利用 AMPT 模型的集合性对初始几何描述的研究
在相对论重离子对撞机(RHIC)上用质子、氘核和氦-3射弹进行几何工程的动机是研究初始几何与最终动量各向异性之间的关系,这被认为是夸克-胶子等离子体的有力证据。PHENIX合作组显示了p/d/(^{3}\)He+Au碰撞中椭圆流和三角流的层次结构,它们遵循蒙特卡洛格劳伯模型所描述的偏心率层次结构,而STAR合作组则显示了三角流结果的不同趋势。为了全面理解这些结果,详细的微观描述,如子核几何和能量沉积面积,变得更加重要。多相传输模型(AMPT)可以定性地描述在部分子和强子阶段的散射集体行为。我们利用多相输运模型模拟小系统,研究不同几何描述下初始几何与最终动量各向异性之间的关系。
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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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