Momentum correlation of light nuclei in Au plus Au collisions at √sNN=2.0 ∼ 7.7 GeV

被引：4

作者：

Qiao, Feng-Hua ^{[1
,2
,3
]}

Deng, Xian-Gai ^{[4
,5
,6
]}

Ma, Yu -Gang ^{[4
,5
,6
]}

机构：

[1] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100080, Peoples R China

[4] Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China

[5] NSFC, Shanghai Res Ctr Theoret Nucl Phys, Shanghai 200438, Peoples R China

[6] Fudan Univ, Shanghai 200438, Peoples R China

来源：

PHYSICS LETTERS B | 2024年 / 850卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

QUANTUM MOLECULAR-DYNAMICS; COLLECTIVE FLOW; ELLIPTIC FLOW; COALESCENCE; ENERGY; PARTICLES; EQUATION; PROTON; PROBE; INTERFEROMETRY;

D O I：

10.1016/j.physletb.2024.138535

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Within the Ultra-relativistic Quantum Molecular Dynamics model (UrQMD) coupled with nucleon coalescence model and Mini-Spanning-Tree model, the yields of light nuclei have been stimulated in Au + Au collisions over an energy range of root s(NN) = 2.0 similar to 7.7 GeV and the momentum correlation functions of light nuclei pairs have been calculated by both the Lednicky-Lyuboshitz and the Correlation After Burner methods. We compare the yields of light nuclei and their momentum correlation functions at midrapidity in this energy region with experimental data. It is found that there are differences between the results of the two models, and the coalescence method seems less valid at low collision energy. Furthermore, both the peak values of proton-proton correlation functions and the transition point of elliptic flows from out-of-plane to in-plane emission show a turning point around 3-4 GeV, which suggests that there is a relation between momentum correlation function and collective flow of particles.

引用

页数：8

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