{"title":"等边碰撞中初始波动和核变形的影响","authors":"Jian-Fei Wang, Hao-Jie Xu, Fu-Qiang Wang","doi":"10.1007/s41365-024-01480-8","DOIUrl":null,"url":null,"abstract":"<p>Relativistic isobar <span>\\(\\left( {_{{44}}^{{96}} {\\text{Ru}} +\\, _{{44}}^{{96}} {{\\text{Ru}\\, \\text{and} }}\\,_{{40}}^{{96}} {\\text{Zr}} +\\, _{{40}}^{{96}} {\\text{Zr}}} \\right)\\)</span> 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 <span>\\(\\left(R_{\\langle N_{{\\textrm{ch}}}\\rangle }\\right)\\)</span> and the second- <span>\\(\\left(R_{\\epsilon _{2}}\\right)\\)</span> and third-order eccentricity <span>\\(\\left(R_{\\epsilon _{3}}\\right)\\)</span> between isobar collisions using initial state Glauber models. It is found that initial fluctuations and nuclear deformations have negligible effects on <span>\\(R_{\\langle N_{{\\textrm{ch}}}\\rangle }\\)</span> in most central collisions, while both are important for the <span>\\(R_{\\epsilon _{2}}\\)</span> and <span>\\(R_{\\epsilon _{3}}\\)</span>, 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.</p>","PeriodicalId":19177,"journal":{"name":"Nuclear Science and Techniques","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of initial fluctuations and nuclear deformations in isobar collisions\",\"authors\":\"Jian-Fei Wang, Hao-Jie Xu, Fu-Qiang Wang\",\"doi\":\"10.1007/s41365-024-01480-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Relativistic isobar <span>\\\\(\\\\left( {_{{44}}^{{96}} {\\\\text{Ru}} +\\\\, _{{44}}^{{96}} {{\\\\text{Ru}\\\\, \\\\text{and} }}\\\\,_{{40}}^{{96}} {\\\\text{Zr}} +\\\\, _{{40}}^{{96}} {\\\\text{Zr}}} \\\\right)\\\\)</span> 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 <span>\\\\(\\\\left(R_{\\\\langle N_{{\\\\textrm{ch}}}\\\\rangle }\\\\right)\\\\)</span> and the second- <span>\\\\(\\\\left(R_{\\\\epsilon _{2}}\\\\right)\\\\)</span> and third-order eccentricity <span>\\\\(\\\\left(R_{\\\\epsilon _{3}}\\\\right)\\\\)</span> between isobar collisions using initial state Glauber models. It is found that initial fluctuations and nuclear deformations have negligible effects on <span>\\\\(R_{\\\\langle N_{{\\\\textrm{ch}}}\\\\rangle }\\\\)</span> in most central collisions, while both are important for the <span>\\\\(R_{\\\\epsilon _{2}}\\\\)</span> and <span>\\\\(R_{\\\\epsilon _{3}}\\\\)</span>, 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.</p>\",\"PeriodicalId\":19177,\"journal\":{\"name\":\"Nuclear Science and Techniques\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Science and Techniques\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1007/s41365-024-01480-8\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Science and Techniques","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s41365-024-01480-8","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
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.
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.