{"title":"Electromagnetic polarizabilities of the spin- 12 singly heavy baryons in heavy baryon chiral perturbation theory","authors":"Yan-Ke Chen, Liang-Zhen Wen, Lu Meng, Shi-Lin Zhu","doi":"10.1103/physrevd.111.054019","DOIUrl":null,"url":null,"abstract":"We calculate the electromagnetic polarizabilities of the spin-1</a:mn>2</a:mn></a:mfrac></a:math> singly heavy baryons in the heavy baryon chiral perturbation theory up to <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mi mathvariant=\"script\">O</c:mi><c:mo stretchy=\"false\">(</c:mo><c:msup><c:mi>p</c:mi><c:mn>3</c:mn></c:msup><c:mo stretchy=\"false\">)</c:mo></c:math>. We estimate the low-energy constants using the magnetic moments of singly charmed baryons from lattice QCD simulations and the experimental decay widths of <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:msub><h:mi mathvariant=\"normal\">Σ</h:mi><h:mi>c</h:mi></h:msub></h:math> and <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:msubsup><k:mi mathvariant=\"normal\">Σ</k:mi><k:mi>c</k:mi><k:mo>*</k:mo></k:msubsup></k:math>. Our results indicate that the long-range chiral corrections make significant contributions to the polarizabilities. Additionally, the magnetic dipole transitions <n:math xmlns:n=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><n:msubsup><n:mi mathvariant=\"script\">B</n:mi><n:mn>6</n:mn><n:mo>*</n:mo></n:msubsup><n:mo stretchy=\"false\">→</n:mo><n:msub><n:mi mathvariant=\"script\">B</n:mi><n:mn>6</n:mn></n:msub><n:mo>+</n:mo><n:mi>γ</n:mi></n:math> also provide large contribution to the magnetic polarizabilities. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"37 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review D","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevd.111.054019","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
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Abstract
We calculate the electromagnetic polarizabilities of the spin-12 singly heavy baryons in the heavy baryon chiral perturbation theory up to O(p3). We estimate the low-energy constants using the magnetic moments of singly charmed baryons from lattice QCD simulations and the experimental decay widths of Σc and Σc*. Our results indicate that the long-range chiral corrections make significant contributions to the polarizabilities. Additionally, the magnetic dipole transitions B6*→B6+γ also provide large contribution to the magnetic polarizabilities. Published by the American Physical Society2025
期刊介绍：
Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics.
PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including:
Particle physics experiments,
Electroweak interactions,
Strong interactions,
Lattice field theories, lattice QCD,
Beyond the standard model physics,
Phenomenological aspects of field theory, general methods,
Gravity, cosmology, cosmic rays,
Astrophysics and astroparticle physics,
General relativity,
Formal aspects of field theory, field theory in curved space,
String theory, quantum gravity, gauge/gravity duality.
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