{"title":"Light quark fragmentation into an S-wave fully charmed tetraquark","authors":"Xiao-Wei Bai, Yingsheng Huang, Wen-Long Sang","doi":"10.1103/physrevd.111.054006","DOIUrl":null,"url":null,"abstract":"We compute the fragmentation function of a light quark into S-wave fully charmed tetraquarks (T</a:mi>4</a:mn>c</a:mi></a:mrow></a:msub></a:math>) within the nonrelativistic QCD framework, at leading order in <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msub><c:mi>α</c:mi><c:mi>s</c:mi></c:msub></c:math> and <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi>v</e:mi></e:math>. We present results for light quark fragmentation into <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:msub><g:mi>T</g:mi><g:mrow><g:mn>4</g:mn><g:mi>c</g:mi></g:mrow></g:msub></g:math> and predict its contribution to <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:msub><i:mi>T</i:mi><i:mrow><i:mn>4</i:mn><i:mi>c</i:mi></i:mrow></i:msub></i:math> production at high transverse momentum (<k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:msub><k:mi>p</k:mi><k:mi>T</k:mi></k:msub></k:math>) at the large hadron collider and electron-ion collider. We also compare light quark fragmentation with charm quark and gluon fragmentation channels. Our analysis shows that the production cross section for <m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><m:msub><m:mi>T</m:mi><m:mrow><m:mn>4</m:mn><m:mi>c</m:mi></m:mrow></m:msub></m:math> from light quark fragmentation is smaller than that from gluon fragmentation but larger than that from charm quark fragmentation. <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":"59 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-03-10","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.111.054006","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}
引用次数: 0
Abstract
We compute the fragmentation function of a light quark into S-wave fully charmed tetraquarks (T4c) within the nonrelativistic QCD framework, at leading order in αs and v. We present results for light quark fragmentation into T4c and predict its contribution to T4c production at high transverse momentum (pT) at the large hadron collider and electron-ion collider. We also compare light quark fragmentation with charm quark and gluon fragmentation channels. Our analysis shows that the production cross section for T4c from light quark fragmentation is smaller than that from gluon fragmentation but larger than that from charm quark fragmentation. 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.