{"title":"我们能从半轻子 $B \\to D^* \\ell ν_\\ell$ 衰变的角差率(仅)中学到什么","authors":"G. Martinelli, S. Simula, L. Vittorio","doi":"arxiv-2409.10492","DOIUrl":null,"url":null,"abstract":"We present a new, simple approach to the study of semileptonic $B \\to D^*\n\\ell \\nu_\\ell$ decays based on the angular distributions of the final state\nparticles only. Our approach is model independent and never requires the\nknowledge of $\\vert V_{cb}\\vert$. By studying such distributions in the case of\nlight leptons, a comparison between results from different data sets from the\nBelle and BelleII Collaborations and between data and Standard Model\ncalculations is also given for several interesting quantities. A good\nconsistency is observed between some of the experimental results and the\ntheoretical predictions.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"203 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"What we can learn from the angular differential rates (only) in semileptonic $B \\\\to D^* \\\\ell ν_\\\\ell$ decays\",\"authors\":\"G. Martinelli, S. Simula, L. Vittorio\",\"doi\":\"arxiv-2409.10492\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a new, simple approach to the study of semileptonic $B \\\\to D^*\\n\\\\ell \\\\nu_\\\\ell$ decays based on the angular distributions of the final state\\nparticles only. Our approach is model independent and never requires the\\nknowledge of $\\\\vert V_{cb}\\\\vert$. By studying such distributions in the case of\\nlight leptons, a comparison between results from different data sets from the\\nBelle and BelleII Collaborations and between data and Standard Model\\ncalculations is also given for several interesting quantities. A good\\nconsistency is observed between some of the experimental results and the\\ntheoretical predictions.\",\"PeriodicalId\":501067,\"journal\":{\"name\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"volume\":\"203 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.10492\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - High Energy Physics - Phenomenology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10492","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
What we can learn from the angular differential rates (only) in semileptonic $B \to D^* \ell ν_\ell$ decays
We present a new, simple approach to the study of semileptonic $B \to D^*
\ell \nu_\ell$ decays based on the angular distributions of the final state
particles only. Our approach is model independent and never requires the
knowledge of $\vert V_{cb}\vert$. By studying such distributions in the case of
light leptons, a comparison between results from different data sets 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.