{"title":"Hidden-charm strong decays of the spin-2 partner of X(3872)","authors":"Gurjav Ganbold, M. A. Ivanov","doi":"10.1103/physrevd.111.014007","DOIUrl":null,"url":null,"abstract":"Hidden-charm strong decays of the spin-2 partner X</a:mi>2</a:mn></a:msub>(</a:mo>4014</a:mn>)</a:mo></a:math> of the charmoniumlike state <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi>X</e:mi><e:mo stretchy=\"false\">(</e:mo><e:mn>3872</e:mn><e:mo stretchy=\"false\">)</e:mo></e:math> have been studied in the framework of the covariant confined quark model. The exotic state <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:msub><i:mi>X</i:mi><i:mn>2</i:mn></i:msub></i:math> has been interpreted as a four-quark state with molecular-type interpolating current. We have considered the decay widths of <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:msub><k:mi>X</k:mi><k:mn>2</k:mn></k:msub></k:math> on the level of two-petal quark loops. The partial widths of the strong decays <m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><m:msub><m:mi>X</m:mi><m:mn>2</m:mn></m:msub><m:mo stretchy=\"false\">→</m:mo><m:mi>ω</m:mi><m:mi>J</m:mi><m:mo>/</m:mo><m:mi mathvariant=\"normal\">Ψ</m:mi></m:math> and <q:math xmlns:q=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><q:msub><q:mi>X</q:mi><q:mn>2</q:mn></q:msub><q:mo stretchy=\"false\">→</q:mo><q:msup><q:mi>ρ</q:mi><q:mn>0</q:mn></q:msup><q:mi>J</q:mi><q:mo>/</q:mo><q:mi mathvariant=\"normal\">Ψ</q:mi></q:math> have been calculated and the related branching ratio has been analyzed. <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":"83 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-01-10","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.111.014007","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
Hidden-charm strong decays of the spin-2 partner X2(4014) of the charmoniumlike state X(3872) have been studied in the framework of the covariant confined quark model. The exotic state X2 has been interpreted as a four-quark state with molecular-type interpolating current. We have considered the decay widths of X2 on the level of two-petal quark loops. The partial widths of the strong decays X2→ωJ/Ψ and X2→ρ0J/Ψ have been calculated and the related branching ratio has been analyzed. 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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