: We measure the complete set of angular coefficients J_{i} for exclusive B[over ¯]→D^{*}ℓν[over ¯]_{ℓ} decays (ℓ=e, μ). Our analysis uses the full 711  fb^{-1} Belle dataset with hadronic tag-side reconstruction. The results allow us to extract the form factors describing the B[over ¯]→D^{*} transition and the Cabibbo-Kobayashi-Maskawa matrix element |V_{cb}|. Using recent lattice QCD calculations for the hadronic form factors, we find |V_{cb}|=(40.7±0.7)×10^{-3} using the Boyd-Grinstein-Lebed parametrization, compatible with determinations from inclusive semileptonic decays. We search for lepton flavor universality violation as a function of the hadronic recoil parameter w and investigate the differences of the electron and muon angular distributions. We find no deviation from standard model expectations.

Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for |Vcb | and Tests of Lepton Flavor Universality / Prim, M. T.; Bernlochner, F.; Metzner, F.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Babu, V.; Banerjee, S.; Behera, P.; Belous, K.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswas, D.; Bodrov, D.; Bondar, A.; Borah, J.; Bračko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Campajola, M.; Cao, L.; Červenkov, D.; Chang, P.; Cheon, B. G.; Choi, S. K.; Choi, Y.; Choudhury, S.; Cochran, J.; Das, S.; Dash, N.; De Nardo, G.; De Pietro, G.; Dhamija, R.; Di Capua, F.; Doležal, Z.; Dong, T. V.; Dubey, S.; Ecker, P.; Epifanov, D.; Ferber, T.; Ferlewicz, D.; Fulsom, B. G.; Garg, R.; Gaur, V.; Giri, A.; Goldenzweig, P.; Gu, T.; Gudkova, K.; Hadjivasiliou, C.; Hara, T.; Hayashii, H.; Hazra, S.; Hedges, M. T.; Herrmann, D.; Hernández Villanueva, M.; Hou, W. S.; Hsu, C. L.; Inami, K.; Inguglia, G.; Ipsita, N.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W. W.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; Kim, K. H.; Kodyš, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, M.; Kumar, R.; Kwon, Y. J.; Lam, T.; Lee, S. C.; Lewis, P.; Li, L. K.; Li Gioi, L.; Libby, J.; Liventsev, D.; Ma, Y.; Matsuda, T.; Matvienko, D.; Maurya, S. K.; Meier, F.; Merola, M.; Miyabayashi, K.; Mizuk, R.; Mohanty, G. B.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:13(2024). [10.1103/PhysRevLett.133.131801]

Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for |Vcb | and Tests of Lepton Flavor Universality

Campajola M.;De Nardo G.;Di Capua F.;Merola M.;
2024

Abstract

: We measure the complete set of angular coefficients J_{i} for exclusive B[over ¯]→D^{*}ℓν[over ¯]_{ℓ} decays (ℓ=e, μ). Our analysis uses the full 711  fb^{-1} Belle dataset with hadronic tag-side reconstruction. The results allow us to extract the form factors describing the B[over ¯]→D^{*} transition and the Cabibbo-Kobayashi-Maskawa matrix element |V_{cb}|. Using recent lattice QCD calculations for the hadronic form factors, we find |V_{cb}|=(40.7±0.7)×10^{-3} using the Boyd-Grinstein-Lebed parametrization, compatible with determinations from inclusive semileptonic decays. We search for lepton flavor universality violation as a function of the hadronic recoil parameter w and investigate the differences of the electron and muon angular distributions. We find no deviation from standard model expectations.
2024
Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for |Vcb | and Tests of Lepton Flavor Universality / Prim, M. T.; Bernlochner, F.; Metzner, F.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Babu, V.; Banerjee, S.; Behera, P.; Belous, K.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswas, D.; Bodrov, D.; Bondar, A.; Borah, J.; Bračko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Campajola, M.; Cao, L.; Červenkov, D.; Chang, P.; Cheon, B. G.; Choi, S. K.; Choi, Y.; Choudhury, S.; Cochran, J.; Das, S.; Dash, N.; De Nardo, G.; De Pietro, G.; Dhamija, R.; Di Capua, F.; Doležal, Z.; Dong, T. V.; Dubey, S.; Ecker, P.; Epifanov, D.; Ferber, T.; Ferlewicz, D.; Fulsom, B. G.; Garg, R.; Gaur, V.; Giri, A.; Goldenzweig, P.; Gu, T.; Gudkova, K.; Hadjivasiliou, C.; Hara, T.; Hayashii, H.; Hazra, S.; Hedges, M. T.; Herrmann, D.; Hernández Villanueva, M.; Hou, W. S.; Hsu, C. L.; Inami, K.; Inguglia, G.; Ipsita, N.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W. W.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; Kim, K. H.; Kodyš, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, M.; Kumar, R.; Kwon, Y. J.; Lam, T.; Lee, S. C.; Lewis, P.; Li, L. K.; Li Gioi, L.; Libby, J.; Liventsev, D.; Ma, Y.; Matsuda, T.; Matvienko, D.; Maurya, S. K.; Meier, F.; Merola, M.; Miyabayashi, K.; Mizuk, R.; Mohanty, G. B.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:13(2024). [10.1103/PhysRevLett.133.131801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/985086
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