{"title":"Hidden charm Pcs(4338)0 production in baryonic B−→J/ψΛp¯ decay","authors":"Yu-Kuo Hsiao, Shu-Ting Cai, Yan-Li Wang","doi":"10.1103/physrevd.111.076020","DOIUrl":null,"url":null,"abstract":"We investigate the resonant baryonic B</a:mi></a:math> decay <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mrow><c:msup><c:mrow><c:mi>B</c:mi></c:mrow><c:mrow><c:mo>−</c:mo></c:mrow></c:msup><c:mo stretchy=\"false\">→</c:mo><c:msubsup><c:mrow><c:mi mathvariant=\"script\">P</c:mi></c:mrow><c:mrow><c:mi>c</c:mi><c:mi>s</c:mi></c:mrow><c:mrow><c:mn>0</c:mn></c:mrow></c:msubsup><c:mover accent=\"true\"><c:mrow><c:mi>p</c:mi></c:mrow><c:mrow><c:mo stretchy=\"false\">¯</c:mo></c:mrow></c:mover><c:mo>,</c:mo><c:msubsup><c:mrow><c:mi mathvariant=\"script\">P</c:mi></c:mrow><c:mrow><c:mi>c</c:mi><c:mi>s</c:mi></c:mrow><c:mrow><c:mn>0</c:mn></c:mrow></c:msubsup><c:mo stretchy=\"false\">→</c:mo><c:mi>J</c:mi><c:mo>/</c:mo><c:mi>ψ</c:mi><c:mi mathvariant=\"normal\">Λ</c:mi></c:mrow></c:math>, where <l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><l:mrow><l:msubsup><l:mrow><l:mi mathvariant=\"script\">P</l:mi></l:mrow><l:mrow><l:mi>c</l:mi><l:mi>s</l:mi></l:mrow><l:mrow><l:mn>0</l:mn></l:mrow></l:msubsup><l:mo>≡</l:mo><l:msub><l:mrow><l:mi mathvariant=\"script\">P</l:mi></l:mrow><l:mrow><l:mi>c</l:mi><l:mi>s</l:mi></l:mrow></l:msub><l:mo stretchy=\"false\">(</l:mo><l:mn>4338</l:mn><l:msup><l:mrow><l:mo stretchy=\"false\">)</l:mo></l:mrow><l:mrow><l:mn>0</l:mn></l:mrow></l:msup></l:mrow></l:math> is identified as a hidden charm pentaquark candidate with strangeness. By interpreting <r:math xmlns:r=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><r:msubsup><r:mi mathvariant=\"script\">P</r:mi><r:mrow><r:mi>c</r:mi><r:mi>s</r:mi></r:mrow><r:mn>0</r:mn></r:msubsup></r:math> as the <u:math xmlns:u=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><u:msub><u:mi mathvariant=\"normal\">Ξ</u:mi><u:mi>c</u:mi></u:msub><u:mover accent=\"true\"><u:mi>D</u:mi><u:mo stretchy=\"false\">¯</u:mo></u:mover></u:math> molecule that strongly decays into <z:math xmlns:z=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><z:mi>J</z:mi><z:mo>/</z:mo><z:mi>ψ</z:mi><z:mi mathvariant=\"normal\">Λ</z:mi></z:math> and <cb:math xmlns:cb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><cb:msub><cb:mi>η</cb:mi><cb:mi>c</cb:mi></cb:msub><cb:mi mathvariant=\"normal\">Λ</cb:mi></cb:math>, we discover a dominant triangle rescattering effect for <fb:math xmlns:fb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><fb:mrow><fb:msup><fb:mrow><fb:mi>B</fb:mi></fb:mrow><fb:mrow><fb:mo>−</fb:mo></fb:mrow></fb:msup><fb:mo stretchy=\"false\">→</fb:mo><fb:msubsup><fb:mrow><fb:mi mathvariant=\"script\">P</fb:mi></fb:mrow><fb:mrow><fb:mi>c</fb:mi><fb:mi>s</fb:mi></fb:mrow><fb:mrow><fb:mn>0</fb:mn></fb:mrow></fb:msubsup><fb:mover accent=\"true\"><fb:mrow><fb:mi>p</fb:mi></fb:mrow><fb:mrow><fb:mo stretchy=\"false\">¯</fb:mo></fb:mrow></fb:mover></fb:mrow></fb:math>, initiated by <lb:math xmlns:lb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><lb:mrow><lb:msup><lb:mrow><lb:mi>B</lb:mi></lb:mrow><lb:mrow><lb:mo>−</lb:mo></lb:mrow></lb:msup><lb:mo stretchy=\"false\">→</lb:mo><lb:mi>J</lb:mi><lb:mo>/</lb:mo><lb:mi>ψ</lb:mi><lb:msup><lb:mrow><lb:mi>K</lb:mi></lb:mrow><lb:mrow><lb:mo>−</lb:mo></lb:mrow></lb:msup></lb:mrow></lb:math>. Through the exchange of a <ob:math xmlns:ob=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><ob:mover accent=\"true\"><ob:mi mathvariant=\"normal\">Λ</ob:mi><ob:mo stretchy=\"false\">¯</ob:mo></ob:mover></ob:math> antibaryon, <tb:math xmlns:tb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><tb:mi>J</tb:mi><tb:mo>/</tb:mo><tb:mi>ψ</tb:mi></tb:math> and <vb:math xmlns:vb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><vb:msup><vb:mi>K</vb:mi><vb:mo>−</vb:mo></vb:msup></vb:math> undergo rescattering, transforming into <xb:math xmlns:xb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><xb:msubsup><xb:mi mathvariant=\"script\">P</xb:mi><xb:mrow><xb:mi>c</xb:mi><xb:mi>s</xb:mi></xb:mrow><xb:mn>0</xb:mn></xb:msubsup></xb:math> and p</ac:mi>¯</ac:mo></ac:mover></ac:math>, respectively. Based on this rescattering mechanism, we calculate <ec:math xmlns:ec=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><ec:mrow><ec:mi mathvariant=\"script\">B</ec:mi><ec:mo stretchy=\"false\">(</ec:mo><ec:msup><ec:mrow><ec:mi>B</ec:mi></ec:mrow><ec:mrow><ec:mo>−</ec:mo></ec:mrow></ec:msup><ec:mo stretchy=\"false\">→</ec:mo><ec:msubsup><ec:mrow><ec:mi mathvariant=\"script\">P</ec:mi></ec:mrow><ec:mrow><ec:mi>c</ec:mi><ec:mi>s</ec:mi></ec:mrow><ec:mrow><ec:mn>0</ec:mn></ec:mrow></ec:msubsup><ec:mover accent=\"true\"><ec:mrow><ec:mi>p</ec:mi></ec:mrow><ec:mrow><ec:mo stretchy=\"false\">¯</ec:mo></ec:mrow></ec:mover><ec:mo>,</ec:mo><ec:msubsup><ec:mrow><ec:mi mathvariant=\"script\">P</ec:mi></ec:mrow><ec:mrow><ec:mi>c</ec:mi><ec:mi>s</ec:mi></ec:mrow><ec:mrow><ec:mn>0</ec:mn></ec:mrow></ec:msubsup><ec:mo stretchy=\"false\">→</ec:mo><ec:mi>J</ec:mi><ec:mo>/</ec:mo><ec:mi>ψ</ec:mi><ec:mi mathvariant=\"normal\">Λ</ec:mi><ec:mo stretchy=\"false\">)</ec:mo><ec:mo>=</ec:mo><ec:mo stretchy=\"false\">(</ec:mo><ec:msubsup><ec:mrow><ec:mn>1.4</ec:mn></ec:mrow><ec:mrow><ec:mo>−</ec:mo><ec:mn>1.1</ec:mn></ec:mrow><ec:mrow><ec:mo>+</ec:mo><ec:mn>2.1</ec:mn></ec:mrow></ec:msubsup><ec:mo stretchy=\"false\">)</ec:mo><ec:mo>×</ec:mo><ec:msup><ec:mrow><ec:mn>10</ec:mn></ec:mrow><ec:mrow><ec:mo>−</ec:mo><ec:mn>6</ec:mn></ec:mrow></ec:msup></ec:mrow></ec:math>, which is consistent with the measured data. <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":"85 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-04-21","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.111.076020","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 investigate the resonant baryonic B decay B−→Pcs0p¯,Pcs0→J/ψΛ, where Pcs0≡Pcs(4338)0 is identified as a hidden charm pentaquark candidate with strangeness. By interpreting Pcs0 as the ΞcD¯ molecule that strongly decays into J/ψΛ and ηcΛ, we discover a dominant triangle rescattering effect for B−→Pcs0p¯, initiated by B−→J/ψK−. Through the exchange of a Λ¯ antibaryon, J/ψ and K− undergo rescattering, transforming into Pcs0 and p¯, respectively. Based on this rescattering mechanism, we calculate B(B−→Pcs0p¯,Pcs0→J/ψΛ)=(1.4−1.1+2.1)×10−6, which is consistent with the measured data. Published by the American Physical Society2025
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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:
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Lattice field theories, lattice QCD,
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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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