具有自旋- \(\frac{1}{2}\)和自旋-的单重重子磁偶极矩\(\frac{3}{2}\)

IF 2.6 3区 物理与天体物理 Q2 PHYSICS, NUCLEAR
Ulaş Özdem
{"title":"具有自旋- \\(\\frac{1}{2}\\)和自旋-的单重重子磁偶极矩\\(\\frac{3}{2}\\)","authors":"Ulaş Özdem","doi":"10.1140/epja/s10050-025-01536-2","DOIUrl":null,"url":null,"abstract":"<div><p>The electromagnetic characteristics of singly-heavy baryons at low energies are responsive to their internal composition, structural configuration, and the associated chiral dynamics of light diquarks. To gain further insight, experimentalists attempt to measure the magnetic dipole moments of singly-charm baryons at the LHC. Given these developments, we conducted an extensive analysis of the magnetic dipole moments of both <span>\\(\\mathrm{J^P}=\\frac{1}{2}^+\\)</span> and <span>\\(\\mathrm{J^P}=\\frac{3}{2}^+\\)</span> singly-heavy baryons employing the QCD light-cone sum rules. Our findings have been compared with other phenomenological estimations that could prove a valuable supplementary resource for interpreting the singly-heavy baryon sector. To shed light on the internal structure of these baryons we study the contributions of the individual quark sectors to the magnetic dipole moments. It was observed that the magnetic dipole moments of the spin-<span>\\(\\frac{1}{2}\\)</span> sextet singly-heavy baryons are governed by the light quarks. Conversely, the role of the heavy quark is significantly enhanced for the spin-<span>\\(\\frac{1}{2}\\)</span> anti-triplet and spin-<span>\\(\\frac{3}{2}\\)</span> sextet singly-heavy baryons. The contribution of light and heavy quarks is observed to have an inverse relationship. The signs of the magnetic dipole moments demonstrate the interaction of the spin degrees of freedom of the quarks. The opposing signs of the light and heavy-quark magnetic dipole moments imply that the spins of these quarks are anti-aligned concerning each other in the baryon. As a byproduct, the electric quadrupole and magnetic octupole moments of spin-<span>\\(\\frac{3}{2}\\)</span> singly-heavy baryons are also calculated. We ascertained the existence of non-zero values for the electric quadrupole and magnetic octupole moments of these baryons, indicative of a non-spherical charge distribution.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01536-2.pdf","citationCount":"0","resultStr":"{\"title\":\"Magnetic dipole moments of the singly-heavy baryons with spin-\\\\(\\\\frac{1}{2}\\\\) and spin-\\\\(\\\\frac{3}{2}\\\\)\",\"authors\":\"Ulaş Özdem\",\"doi\":\"10.1140/epja/s10050-025-01536-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The electromagnetic characteristics of singly-heavy baryons at low energies are responsive to their internal composition, structural configuration, and the associated chiral dynamics of light diquarks. To gain further insight, experimentalists attempt to measure the magnetic dipole moments of singly-charm baryons at the LHC. Given these developments, we conducted an extensive analysis of the magnetic dipole moments of both <span>\\\\(\\\\mathrm{J^P}=\\\\frac{1}{2}^+\\\\)</span> and <span>\\\\(\\\\mathrm{J^P}=\\\\frac{3}{2}^+\\\\)</span> singly-heavy baryons employing the QCD light-cone sum rules. Our findings have been compared with other phenomenological estimations that could prove a valuable supplementary resource for interpreting the singly-heavy baryon sector. To shed light on the internal structure of these baryons we study the contributions of the individual quark sectors to the magnetic dipole moments. It was observed that the magnetic dipole moments of the spin-<span>\\\\(\\\\frac{1}{2}\\\\)</span> sextet singly-heavy baryons are governed by the light quarks. Conversely, the role of the heavy quark is significantly enhanced for the spin-<span>\\\\(\\\\frac{1}{2}\\\\)</span> anti-triplet and spin-<span>\\\\(\\\\frac{3}{2}\\\\)</span> sextet singly-heavy baryons. The contribution of light and heavy quarks is observed to have an inverse relationship. The signs of the magnetic dipole moments demonstrate the interaction of the spin degrees of freedom of the quarks. The opposing signs of the light and heavy-quark magnetic dipole moments imply that the spins of these quarks are anti-aligned concerning each other in the baryon. As a byproduct, the electric quadrupole and magnetic octupole moments of spin-<span>\\\\(\\\\frac{3}{2}\\\\)</span> singly-heavy baryons are also calculated. We ascertained the existence of non-zero values for the electric quadrupole and magnetic octupole moments of these baryons, indicative of a non-spherical charge distribution.</p></div>\",\"PeriodicalId\":786,\"journal\":{\"name\":\"The European Physical Journal A\",\"volume\":\"61 3\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-03-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01536-2.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The European Physical Journal A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1140/epja/s10050-025-01536-2\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epja/s10050-025-01536-2","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
引用次数: 0

摘要

低能量单重重子的电磁特性响应于它们的内部组成、结构构型和相关的轻重夸克手性动力学。为了获得更深入的了解,实验学家试图在大型强子对撞机中测量单粲重子的磁偶极矩。鉴于这些进展,我们采用QCD光锥和规则对\(\mathrm{J^P}=\frac{1}{2}^+\)和\(\mathrm{J^P}=\frac{3}{2}^+\)单重重子的磁偶极矩进行了广泛的分析。我们的发现已经与其他现象学估计进行了比较,这些估计可以证明是解释单重重子扇区的有价值的补充资源。为了阐明这些重子的内部结构,我们研究了各个夸克扇区对磁偶极矩的贡献。观察到自旋\(\frac{1}{2}\)六重体单重重子的磁偶极矩受轻夸克支配。相反,对于自旋\(\frac{1}{2}\)反三重态和自旋\(\frac{3}{2}\)六重体单重重子,重夸克的作用显著增强。轻夸克和重夸克的贡献被观察到呈反比关系。磁偶极矩的符号证明了夸克自旋自由度的相互作用。轻夸克和重夸克磁偶极矩的相反符号意味着这些夸克的自旋在重子中彼此是反排列的。作为副产物,还计算了自旋\(\frac{3}{2}\)单重重子的电四极矩和磁八极矩。我们确定了这些重子的电四极矩和磁八极矩的非零值的存在,表明它们的电荷分布是非球形的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Magnetic dipole moments of the singly-heavy baryons with spin-\(\frac{1}{2}\) and spin-\(\frac{3}{2}\)

The electromagnetic characteristics of singly-heavy baryons at low energies are responsive to their internal composition, structural configuration, and the associated chiral dynamics of light diquarks. To gain further insight, experimentalists attempt to measure the magnetic dipole moments of singly-charm baryons at the LHC. Given these developments, we conducted an extensive analysis of the magnetic dipole moments of both \(\mathrm{J^P}=\frac{1}{2}^+\) and \(\mathrm{J^P}=\frac{3}{2}^+\) singly-heavy baryons employing the QCD light-cone sum rules. Our findings have been compared with other phenomenological estimations that could prove a valuable supplementary resource for interpreting the singly-heavy baryon sector. To shed light on the internal structure of these baryons we study the contributions of the individual quark sectors to the magnetic dipole moments. It was observed that the magnetic dipole moments of the spin-\(\frac{1}{2}\) sextet singly-heavy baryons are governed by the light quarks. Conversely, the role of the heavy quark is significantly enhanced for the spin-\(\frac{1}{2}\) anti-triplet and spin-\(\frac{3}{2}\) sextet singly-heavy baryons. The contribution of light and heavy quarks is observed to have an inverse relationship. The signs of the magnetic dipole moments demonstrate the interaction of the spin degrees of freedom of the quarks. The opposing signs of the light and heavy-quark magnetic dipole moments imply that the spins of these quarks are anti-aligned concerning each other in the baryon. As a byproduct, the electric quadrupole and magnetic octupole moments of spin-\(\frac{3}{2}\) singly-heavy baryons are also calculated. We ascertained the existence of non-zero values for the electric quadrupole and magnetic octupole moments of these baryons, indicative of a non-spherical charge distribution.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
The European Physical Journal A
The European Physical Journal A 物理-物理:核物理
CiteScore
5.00
自引率
18.50%
发文量
216
审稿时长
3-8 weeks
期刊介绍: Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信