Xiao-Hui Zhang, Han Zhang, Bai-Cian Ke, Li-Juan Liu, De-Min Li, En Wang
{"title":"标量f0（500）和f0（980）在过程D0→π0π0K¯0中的作用","authors":"Xiao-Hui Zhang, Han Zhang, Bai-Cian Ke, Li-Juan Liu, De-Min Li, En Wang","doi":"10.1103/physrevd.110.114050","DOIUrl":null,"url":null,"abstract":"Motivated by the near-threshold enhancement and the dip structure around 1 GeV in the π</a:mi>0</a:mn></a:msup>π</a:mi>0</a:mn></a:msup></a:math> invariant mass distribution of the process <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msup><c:mi>D</c:mi><c:mn>0</c:mn></c:msup><c:mo stretchy=\"false\">→</c:mo><c:msup><c:mi>π</c:mi><c:mn>0</c:mn></c:msup><c:msup><c:mi>π</c:mi><c:mn>0</c:mn></c:msup><c:msup><c:mover accent=\"true\"><c:mi>K</c:mi><c:mo stretchy=\"false\">¯</c:mo></c:mover><c:mn>0</c:mn></c:msup></c:math> observed by the CLEO Collaboration, we have investigated this process by taking into account the contribution from the <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:mi>S</h:mi></h:math>-wave pseudoscalar meson–pseudoscalar meson interactions within the chiral unitary approach, and also the one from the intermediate resonance <j:math xmlns:j=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><j:msup><j:mover accent=\"true\"><j:mi>K</j:mi><j:mo stretchy=\"false\">¯</j:mo></j:mover><j:mo>*</j:mo></j:msup><j:mo stretchy=\"false\">(</j:mo><j:mn>892</j:mn><j:mo stretchy=\"false\">)</j:mo></j:math>. Our results are in good agreement with the CLEO measurements, which implies that the near-threshold enhancement near the <p:math xmlns:p=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><p:msup><p:mi>π</p:mi><p:mn>0</p:mn></p:msup><p:msup><p:mi>π</p:mi><p:mn>0</p:mn></p:msup></p:math> threshold is mainly due to the contributions from the scalar meson <r:math xmlns:r=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><r:msub><r:mi>f</r:mi><r:mn>0</r:mn></r:msub><r:mo stretchy=\"false\">(</r:mo><r:mn>500</r:mn><r:mo stretchy=\"false\">)</r:mo></r:math> and the intermediate <v:math xmlns:v=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><v:mrow><v:msup><v:mrow><v:mover accent=\"true\"><v:mrow><v:mi>K</v:mi></v:mrow><v:mrow><v:mo stretchy=\"false\">¯</v:mo></v:mrow></v:mover></v:mrow><v:mrow><v:mo>*</v:mo></v:mrow></v:msup></v:mrow></v:math>, and the cusp structure around 1 GeV in the <z:math xmlns:z=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><z:msup><z:mi>π</z:mi><z:mn>0</z:mn></z:msup><z:msup><z:mi>π</z:mi><z:mn>0</z:mn></z:msup></z:math> invariant mass distribution should be associated with the scalar meson <bb:math xmlns:bb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><bb:msub><bb:mi>f</bb:mi><bb:mn>0</bb:mn></bb:msub><bb:mo stretchy=\"false\">(</bb:mo><bb:mn>980</bb:mn><bb:mo stretchy=\"false\">)</bb:mo></bb:math>. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2024</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"81 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Roles of the scalar f0(500) and f0(980) in the process D0→π0π0K¯0\",\"authors\":\"Xiao-Hui Zhang, Han Zhang, Bai-Cian Ke, Li-Juan Liu, De-Min Li, En Wang\",\"doi\":\"10.1103/physrevd.110.114050\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Motivated by the near-threshold enhancement and the dip structure around 1 GeV in the π</a:mi>0</a:mn></a:msup>π</a:mi>0</a:mn></a:msup></a:math> invariant mass distribution of the process <c:math xmlns:c=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><c:msup><c:mi>D</c:mi><c:mn>0</c:mn></c:msup><c:mo stretchy=\\\"false\\\">→</c:mo><c:msup><c:mi>π</c:mi><c:mn>0</c:mn></c:msup><c:msup><c:mi>π</c:mi><c:mn>0</c:mn></c:msup><c:msup><c:mover accent=\\\"true\\\"><c:mi>K</c:mi><c:mo stretchy=\\\"false\\\">¯</c:mo></c:mover><c:mn>0</c:mn></c:msup></c:math> observed by the CLEO Collaboration, we have investigated this process by taking into account the contribution from the <h:math xmlns:h=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><h:mi>S</h:mi></h:math>-wave pseudoscalar meson–pseudoscalar meson interactions within the chiral unitary approach, and also the one from the intermediate resonance <j:math xmlns:j=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><j:msup><j:mover accent=\\\"true\\\"><j:mi>K</j:mi><j:mo stretchy=\\\"false\\\">¯</j:mo></j:mover><j:mo>*</j:mo></j:msup><j:mo stretchy=\\\"false\\\">(</j:mo><j:mn>892</j:mn><j:mo stretchy=\\\"false\\\">)</j:mo></j:math>. Our results are in good agreement with the CLEO measurements, which implies that the near-threshold enhancement near the <p:math xmlns:p=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><p:msup><p:mi>π</p:mi><p:mn>0</p:mn></p:msup><p:msup><p:mi>π</p:mi><p:mn>0</p:mn></p:msup></p:math> threshold is mainly due to the contributions from the scalar meson <r:math xmlns:r=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><r:msub><r:mi>f</r:mi><r:mn>0</r:mn></r:msub><r:mo stretchy=\\\"false\\\">(</r:mo><r:mn>500</r:mn><r:mo stretchy=\\\"false\\\">)</r:mo></r:math> and the intermediate <v:math xmlns:v=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><v:mrow><v:msup><v:mrow><v:mover accent=\\\"true\\\"><v:mrow><v:mi>K</v:mi></v:mrow><v:mrow><v:mo stretchy=\\\"false\\\">¯</v:mo></v:mrow></v:mover></v:mrow><v:mrow><v:mo>*</v:mo></v:mrow></v:msup></v:mrow></v:math>, and the cusp structure around 1 GeV in the <z:math xmlns:z=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><z:msup><z:mi>π</z:mi><z:mn>0</z:mn></z:msup><z:msup><z:mi>π</z:mi><z:mn>0</z:mn></z:msup></z:math> invariant mass distribution should be associated with the scalar meson <bb:math xmlns:bb=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><bb:msub><bb:mi>f</bb:mi><bb:mn>0</bb:mn></bb:msub><bb:mo stretchy=\\\"false\\\">(</bb:mo><bb:mn>980</bb:mn><bb:mo stretchy=\\\"false\\\">)</bb:mo></bb:math>. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2024</jats:copyright-year> </jats:permissions> </jats:supplementary-material>\",\"PeriodicalId\":20167,\"journal\":{\"name\":\"Physical Review D\",\"volume\":\"81 1\",\"pages\":\"\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2024-12-30\",\"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.110.114050\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review D","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevd.110.114050","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}
Roles of the scalar f0(500) and f0(980) in the process D0→π0π0K¯0
Motivated by the near-threshold enhancement and the dip structure around 1 GeV in the π0π0 invariant mass distribution of the process D0→π0π0K¯0 observed by the CLEO Collaboration, we have investigated this process by taking into account the contribution from the S-wave pseudoscalar meson–pseudoscalar meson interactions within the chiral unitary approach, and also the one from the intermediate resonance K¯*(892). Our results are in good agreement with the CLEO measurements, which implies that the near-threshold enhancement near the π0π0 threshold is mainly due to the contributions from the scalar meson f0(500) and the intermediate K¯*, and the cusp structure around 1 GeV in the π0π0 invariant mass distribution should be associated with the scalar meson f0(980). Published by the American Physical Society2024
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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:
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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