{"title":"我们可以从半光子B→D* * ν ν衰变的角微分速率中学到什么","authors":"G. Martinelli, S. Simula, L. Vittorio","doi":"10.1103/physrevd.111.013005","DOIUrl":null,"url":null,"abstract":"We present a simple approach to the study of semileptonic B</a:mi>→</a:mo>D</a:mi></a:mrow>*</a:mo></a:mrow></a:msup>ℓ</a:mo>ν</a:mi></a:mrow>ℓ</a:mo></a:mrow></a:msub></a:mrow></a:math> decays based on the angular distributions of the final state particles only. Our approach is model independent and never requires the knowledge of <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><d:mo stretchy=\"false\">|</d:mo><d:msub><d:mi>V</d:mi><d:mrow><d:mi>c</d:mi><d:mi>b</d:mi></d:mrow></d:msub><d:mo stretchy=\"false\">|</d:mo></d:math>. By studying such distributions in the case of light leptons, a comparison between results from different datasets from the Belle and BelleII Collaborations and between data and Standard Model calculations is also given for several interesting quantities. A good consistency is observed between some of the experimental results and the theoretical predictions. <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":"15 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"What we can learn from the angular differential rates from semileptonic B→D*ℓνℓ decays\",\"authors\":\"G. Martinelli, S. Simula, L. Vittorio\",\"doi\":\"10.1103/physrevd.111.013005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a simple approach to the study of semileptonic B</a:mi>→</a:mo>D</a:mi></a:mrow>*</a:mo></a:mrow></a:msup>ℓ</a:mo>ν</a:mi></a:mrow>ℓ</a:mo></a:mrow></a:msub></a:mrow></a:math> decays based on the angular distributions of the final state particles only. Our approach is model independent and never requires the knowledge of <d:math xmlns:d=\\\"http://www.w3.org/1998/Math/MathML\\\" display=\\\"inline\\\"><d:mo stretchy=\\\"false\\\">|</d:mo><d:msub><d:mi>V</d:mi><d:mrow><d:mi>c</d:mi><d:mi>b</d:mi></d:mrow></d:msub><d:mo stretchy=\\\"false\\\">|</d:mo></d:math>. By studying such distributions in the case of light leptons, a comparison between results from different datasets from the Belle and BelleII Collaborations and between data and Standard Model calculations is also given for several interesting quantities. A good consistency is observed between some of the experimental results and the theoretical predictions. <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\":\"15 1\",\"pages\":\"\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-01-22\",\"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.111.013005\",\"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.111.013005","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}
What we can learn from the angular differential rates from semileptonic B→D*ℓνℓ decays
We present a simple approach to the study of semileptonic B→D*ℓνℓ decays based on the angular distributions of the final state particles only. Our approach is model independent and never requires the knowledge of |Vcb|. By studying such distributions in the case of light leptons, a comparison between results from different datasets from the Belle and BelleII Collaborations and between data and Standard Model calculations is also given for several interesting quantities. A good consistency is observed between some of the experimental results and the theoretical predictions. 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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