等边碰撞中初始波动和核变形的影响

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Science and Techniques Pub Date : 2024-07-04 DOI:10.1007/s41365-024-01480-8
Jian-Fei Wang, Hao-Jie Xu, Fu-Qiang Wang
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引用次数: 0

摘要

相对论等值线({_{{44}}^{96}}){{text{Ru}}+\, _{{44}}^{{96}}{{text{Ru}} {{text{Ru}}, {{text{and}}}\,_{{40}}^{{96}}{{text{Zr}}+\, _{{40}}^{{96}}{text{Zr}}\right)\)碰撞揭示了它们的核大小和核形状的复杂差异,激发了利用相对论重离子碰撞对核结构进行非常规研究的兴趣。在这项研究中我们利用初始状态格劳伯模型研究了等边碰撞之间的平均倍率(left(R_{/langle N_{/textrm{ch}}}rangle }/right))和二阶(left(R_{/epsilon _{2}}/right))及三阶偏心率(left(R_{/epsilon _{3}}/right))的相对差异。研究发现,在大多数中心对撞中,初始波动和核变形对\(R_{/langle N_{/textrm{ch}}}\rangle }\) 的影响可以忽略不计,而两者对\(R_{/epsilon _{2}}\)和\(R_{/epsilon _{3}}\)的影响都很重要,其程度对潜在的核子或亚核子自由度很敏感。与真实数据相比,这些特征可以探究粒子产生机制和核结构的基本物理原理。
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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Impact of initial fluctuations and nuclear deformations in isobar collisions

Relativistic isobar \(\left( {_{{44}}^{{96}} {\text{Ru}} +\, _{{44}}^{{96}} {{\text{Ru}\, \text{and} }}\,_{{40}}^{{96}} {\text{Zr}} +\, _{{40}}^{{96}} {\text{Zr}}} \right)\) collisions have revealed intricate differences in their nuclear size and shape, inspiring unconventional studies of nuclear structure using relativistic heavy ion collisions. In this study, we investigate the relative differences in the mean multiplicity \(\left(R_{\langle N_{{\textrm{ch}}}\rangle }\right)\) and the second- \(\left(R_{\epsilon _{2}}\right)\) and third-order eccentricity \(\left(R_{\epsilon _{3}}\right)\) between isobar collisions using initial state Glauber models. It is found that initial fluctuations and nuclear deformations have negligible effects on \(R_{\langle N_{{\textrm{ch}}}\rangle }\) in most central collisions, while both are important for the \(R_{\epsilon _{2}}\) and \(R_{\epsilon _{3}}\), the degree of which is sensitive to the underlying nucleonic or sub-nucleonic degree of freedom. These features, compared to real data, may probe the particle production mechanism and the physics underlying nuclear structure.

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来源期刊
Nuclear Science and Techniques
Nuclear Science and Techniques 物理-核科学技术
CiteScore
5.10
自引率
39.30%
发文量
141
审稿时长
5 months
期刊介绍: Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.
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