{"title":"Production and decay of the X0(2900) state with different interpretations","authors":"Zi-Yan Yang, Qian Wang, Wei Chen","doi":"10.1103/physrevd.111.076030","DOIUrl":null,"url":null,"abstract":"The observation of X</a:mi>0</a:mn></a:msub>(</a:mo>2900</a:mn>)</a:mo></a:math> in the <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:msup><e:mi>B</e:mi><e:mo>+</e:mo></e:msup><e:mo stretchy=\"false\">→</e:mo><e:msup><e:mi>D</e:mi><e:mo>+</e:mo></e:msup><e:msup><e:mi>D</e:mi><e:mo>−</e:mo></e:msup><e:msup><e:mi>K</e:mi><e:mo>+</e:mo></e:msup></e:math> decay process indicates the existence of open flavor tetraquark states. We investigate the production and decay of the <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:msub><h:mi>X</h:mi><h:mn>0</h:mn></h:msub><h:mo stretchy=\"false\">(</h:mo><h:mn>2900</h:mn><h:mo stretchy=\"false\">)</h:mo></h:math> state with the final state interaction mechanism, where we calculate the strong vertices such as <l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><l:msub><l:mi>g</l:mi><l:mrow><l:mover accent=\"true\"><l:mi>D</l:mi><l:mo stretchy=\"false\">¯</l:mo></l:mover><l:mi>K</l:mi><l:msub><l:mi>X</l:mi><l:mn>0</l:mn></l:msub></l:mrow></l:msub></l:math>, <p:math xmlns:p=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><p:msub><p:mi>g</p:mi><p:mrow><p:msup><p:mover accent=\"true\"><p:mi>D</p:mi><p:mo stretchy=\"false\">¯</p:mo></p:mover><p:mo>*</p:mo></p:msup><p:msup><p:mi>K</p:mi><p:mo>*</p:mo></p:msup><p:msub><p:mi>X</p:mi><p:mn>0</p:mn></p:msub></p:mrow></p:msub></p:math>, <t:math xmlns:t=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><t:msub><t:mi>g</t:mi><t:mrow><t:msubsup><t:mi>D</t:mi><t:mi>s</t:mi><t:mo>*</t:mo></t:msubsup><t:mover accent=\"true\"><t:mi>D</t:mi><t:mo stretchy=\"false\">¯</t:mo></t:mover><t:mi>K</t:mi></t:mrow></t:msub></t:math>, and <x:math xmlns:x=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><x:msub><x:mi>g</x:mi><x:mrow><x:msub><x:mi>D</x:mi><x:mrow><x:mi>s</x:mi><x:mn>1</x:mn></x:mrow></x:msub><x:mover accent=\"true\"><x:mi>D</x:mi><x:mo stretchy=\"false\">¯</x:mo></x:mover><x:msup><x:mi>K</x:mi><x:mo>*</x:mo></x:msup></x:mrow></x:msub></x:math> in the framework of the QCD sum rule method. We find that for the interpretation of the <bb:math xmlns:bb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><bb:msup><bb:mover accent=\"true\"><bb:mi>D</bb:mi><bb:mo stretchy=\"false\">¯</bb:mo></bb:mover><bb:mo>*</bb:mo></bb:msup><bb:msup><bb:mi>K</bb:mi><bb:mo>*</bb:mo></bb:msup></bb:math> molecule of <fb:math xmlns:fb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><fb:msub><fb:mi>X</fb:mi><fb:mn>0</fb:mn></fb:msub><fb:mo stretchy=\"false\">(</fb:mo><fb:mn>2900</fb:mn><fb:mo stretchy=\"false\">)</fb:mo></fb:math>, the branching fraction of the production process and the decay width are consistent with the experimental results, indicating that the observed <jb:math xmlns:jb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><jb:msub><jb:mi>X</jb:mi><jb:mn>0</jb:mn></jb:msub><jb:mo stretchy=\"false\">(</jb:mo><jb:mn>2900</jb:mn><jb:mo stretchy=\"false\">)</jb:mo></jb:math> could be interpreted as a <nb:math xmlns:nb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><nb:msup><nb:mover accent=\"true\"><nb:mi>D</nb:mi><nb:mo stretchy=\"false\">¯</nb:mo></nb:mover><nb:mo>*</nb:mo></nb:msup><nb:msup><nb:mi>K</nb:mi><nb:mo>*</nb:mo></nb:msup></nb:math> molecule. However, we cannot exclude the possibility of a compact tetraquark interpretation within the uncertainty. More experimental and theoretical efforts are needed to fully understand the nature of the <rb:math xmlns:rb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><rb:msub><rb:mi>X</rb:mi><rb:mn>0</rb:mn></rb:msub><rb:mo stretchy=\"false\">(</rb:mo><rb:mn>2900</rb:mn><rb:mo stretchy=\"false\">)</rb:mo></rb:math> state. <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":"40 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-04-29","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.111.076030","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
The observation of X0(2900) in the B+→D+D−K+ decay process indicates the existence of open flavor tetraquark states. We investigate the production and decay of the X0(2900) state with the final state interaction mechanism, where we calculate the strong vertices such as gD¯KX0, gD¯*K*X0, gDs*D¯K, and gDs1D¯K* in the framework of the QCD sum rule method. We find that for the interpretation of the D¯*K* molecule of X0(2900), the branching fraction of the production process and the decay width are consistent with the experimental results, indicating that the observed X0(2900) could be interpreted as a D¯*K* molecule. However, we cannot exclude the possibility of a compact tetraquark interpretation within the uncertainty. More experimental and theoretical efforts are needed to fully understand the nature of the X0(2900) state. 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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