PDF (1290K)
摘要
本文对200 GeV的Au+Au碰撞中粲奇异介子DS±的横动量谱进行了模型研究。利用非广延Tsallis统计模型、冲击波模型和Tsallis冲击波模型分析了不同碰撞中心度的粒子分布，并与实验结果进行了比较和讨论，给出和解释了模型各自适用的横动量范围以及其中的动力学冻结参数。非广延参数q和动力学冻结温度随中心度百分比的升高而升高，平均径向流随中心度百分比的升高而降低。与边缘碰撞相比，中心碰撞的热化火球寿命较长，具有更长的演化时间。DS±的动力学冻结时间早于轻强子，具有较小的径向流速，和较高动力学冻结温度。由于质量较大，产生于碰撞更早期，携带着夸克胶子等离子体（Quark-Gluon Plasma, QGP）的相关信息。这些冻结性质有助于加深我们对高能核碰撞中反应体系演化的理解。
关键词
高能核-核碰撞
/
Tsallis冲击波模型
/
DS±粒子谱
/
动力学冻结
Key words
nucleus-nucleus collision at high energies
/
Tsallis Blast-wave model
/
DS ± spectra
/
kinetic freeze-out
[Author(id=1159978742153142943, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=baihui939747536@outlook.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1159978742266389153, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, authorId=1159978742153142943, language=EN, stringName=Hui BAI, firstName=Hui, middleName=null, lastName=BAI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159978742992003748, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, authorId=1159978742153142943, language=CN, stringName=白慧, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=山西大学 物理电子工程学院，山西 太原 030006, bio={"content":"白慧（1996 ），女，湖北武汉人，硕士研究生，主要研究方向为高能核碰撞物理。E-mail：baihui939747536@outlook.com
"}, bioImg=null, bioContent=白慧（1996 ），女，湖北武汉人，硕士研究生，主要研究方向为高能核碰撞物理。E-mail：baihui939747536@outlook.com
, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159978741314282139, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, xref=null, ext=[AuthorCompanyExt(id=1159978741343642267, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, companyId=1159978741314282139, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China), AuthorCompanyExt(id=1159978741373002396, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, companyId=1159978741314282139, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=山西大学 物理电子工程学院，山西 太原 030006)])]), Author(id=1159978743533068968, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=s6109@sxu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1159978744384512684, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, authorId=1159978743533068968, language=EN, stringName=Baochun LI, firstName=Baochun, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159978745089155758, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, authorId=1159978743533068968, language=CN, stringName=李保春, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=山西大学 物理电子工程学院，山西 太原 030006, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159978741314282139, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, xref=null, ext=[AuthorCompanyExt(id=1159978741343642267, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, companyId=1159978741314282139, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China), AuthorCompanyExt(id=1159978741373002396, tenantId=1045748351789510663, journalId=1155139928303341656, articleId=1159978051904921834, companyId=1159978741314282139, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=山西大学 物理电子工程学院，山西 太原 030006)])])]
白慧,李保春.
200 GeV的Au+Au碰撞中粲奇异介子的动力学冻结性质[J].
山西大学学报(自然科学版), 2025, 48(03): 550-557 DOI:10.13451/j.sxu.ns.2023147
基金资助
国家自然科学基金(11575103)
山西省自然科学基金(202103021224036)
京公网安备11010202008535号
