Different coalescence sources of light nucleus production in Au-Au collisions at GeV* * Supported in part by the National Natural Science Foundation of China (12175115,12375074), the Natural Science Foundation of Shandong Province, China (ZR2020MA097), and the Higher Educational Youth Innovation Science and Technology Program of Shandong Province, China (2020KJJ004, 2019KJJ010)

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

Chinese Physics C Pub Date : 2024-05-01 DOI:10.1088/1674-1137/ad2b56

Rui-Qin Wang, Ji-Peng Lv, Yan-Hao Li, Jun Song, Feng-Lan Shao

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引用次数: 0

Abstract

We study the production of light nuclei in the coalescence mechanism of Au-Au collisions at midrapidity at

GeV. We derive analytic formulas of the momentum distributions of two bodies, three bodies, and four nucleons coalescing into light nuclei and naturally explain the transverse momentum spectra of the deuteron (d), triton (t), helium-3 (³He), and helium-4 (⁴He). We reproduce data on the yield rapidity densities, yield ratios, and averaged transverse momenta of d, t, ³He, and ⁴He and provide the proportions of contributions from different coalescence sources for t, ³He, and ⁴He in their production. We find that besides nucleon coalescence, nucleon+nucleus coalescence and nucleus+nucleus coalescence may play requisite roles in light nucleus production in Au-Au collisions at

GeV.

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GeV 金-金碰撞中轻核产生的不同凝聚源* * 国家自然科学基金（12175115,12375074）、山东省自然科学基金（ZR2020MA097）和山东省高等学校青年科技创新计划（2020KJJ004, 2019KJJ010）的部分资助

我们研究了金-金在 GeV 中频对撞凝聚机制中轻核的产生。我们推导了两体、三体和四核子凝聚成轻核的动量分布解析公式，并自然地解释了氘核（d）、三核子（t）、氦-3（3He）和氦-4（4He）的横动量谱。我们再现了 d、t、3He 和 4He 的产率快速密度、产率比和平均横动量数据，并提供了 t、3He 和 4He 在其产生过程中不同凝聚源的贡献比例。我们发现，除了核子凝聚外，核子+核子凝聚和核子+核子凝聚也可能在 GeV 的金-金对撞中的轻核产生中发挥必要的作用。

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来源期刊

Chinese Physics 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.

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