Measurement of differential distributions of B →d∗ℓ ν ¯ ℓ and implications on |Vcb |

M. T. Prim, F. Bernlochner, F. Metzner, K. Lieret, T. Kuhr, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, Sw Banerjee, M. Bauer, P. Behera, J. Bennett, M. BessnerV. Bhardwaj, B. Bhuyan, T. Bilka, D. Biswas, D. Bodrov, J. Borah, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, L. Cao, D. Červenkov, M. C. Chang, V. Chekelian, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Das, N. Dash, G. De Marino, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. DoleŽal, T. V. Dong, D. Epifanov, T. Ferber, D. Ferlewicz, A. Frey, B. G. Fulsom, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, D. Herrmann, M. Hernández Villanueva, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, E. J. Jang, S. Jia, Y. Jin, K. K. Joo, A. B. Kaliyar, K. H. Kang, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. KriŽan, P. Krokovny, M. Kumar, R. Kumar, K. Kumara, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, M. Laurenza, S. C. Lee, P. Lewis, J. Li, L. K. Li, Y. Li, J. Libby, Y. R. Lin, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola, K. Miyabayashi, R. Mizuk, G. B. Mohanty, I. Nakamura, M. Nakao, Z. Natkaniec, A. Natochii, L. Nayak, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, J. Park, S. H. Park, A. Passeri, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, A. Rabusov, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, S. Sandilya, A. Sangal, L. Santelj, V. Savinov, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, W. Shan, M. Shapkin, C. Sharma, J. G. Shiu, B. Shwartz, F. Simon, A. Soffer, A. Sokolov, E. Solovieva, M. Starič, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, R. Van Tonder, G. Varner, K. E. Varvell, A. Vinokurova, A. Vossen, E. Waheed, D. Wang, M. Z. Wang, M. Watanabe, S. Watanuki, E. Won, B. D. Yabsley, W. Yan, S. B. Yang, J. Yelton, Y. Yook, C. Z. Yuan, L. Yuan, Y. Yusa, Y. Zhai, Z. P. Zhang, V. Zhilich, V. Zhukova

Research output: Contribution to journalArticlepeer-review

Abstract

We present a measurement of the differential shapes of exclusive B→D∗ℓν¯ℓ (B=B-,B¯0 and ℓ=e, μ) decays with hadronic tag-side reconstruction for the full 711 fb-1 Belle dataset. We extract the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) form factor parameters and use an external input for the absolute branching fractions to determine the Cabibbo-Kobayashi-Maskawa matrix element and find |Vcb|CLN=(40.2±0.9)×10-3 and |Vcb|BGL=(40.7±1.0)×10-3 with the zero-recoil lattice QCD point F(1)=0.906±0.013. We also perform a study of the impact of beyond zero-recoil lattice QCD calculations on the |Vcb| determinations. Additionally, we present the lepton-flavor universality ratio Reμ=B(B→D∗eν¯e)/B(B→D∗μν¯μ)=0.993±0.023±0.023, the electron and muon forward-backward asymmetry and their difference ΔAFB=0.028±0.028±0.008, and the electron and muon D∗ longitudinal polarization fraction and their difference ΔFLD∗=0.030±0.025±0.007. The uncertainties quoted correspond to the statistical and systematic uncertainties, respectively.

Original languageEnglish
Article number012002
JournalPhysical Review D
Volume108
Issue number1
DOIs
StatePublished - 1 Jul 2023

Funding

FundersFunder number
Basque Foundation for Science, Spain
Excellence Cluster Universe
Key Research Program of Frontier Sciences
Radiation Science Research Institute
National Science Foundation
U.S. Department of Energy
Carl-Zeiss-Stiftung
University of TabukS-1440-0321, S-0256-1438, S-0280-1439
Horizon 2020 Framework Programme884719
European Research Council947006
Australian Research CouncilDP170102204, DP180102629, DP150103061, DE220100462, DP170102389, FT130100303
Department of Science and Technology, Ministry of Science and Technology, India
Department of Atomic Energy, Government of IndiaRTI 4002
Deutsche ForschungsgemeinschaftBE 6075/1-1
Volkswagen Foundation
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
National Natural Science Foundation of China12175041, 12135005, 11975076, 12161141008, 11675166, 11705209
Ministerstvo Školství, Mládeže a TělovýchovyLTT17020
Grantová Agentura České Republiky22-18469S
Bundesministerium für Bildung und Forschung05H21PDKBA
Chinese Academy of SciencesZR2022JQ02, QYZDJ-SSW-SLH011
Austrian Science FundP 31361-N36
Ministry of Education
Ministry of Education and Science of the Russian Federation
Korea Institute of Science and Technology Information
National Research Foundation of Korea2022R1A2C1003993, 2016R1D1A1B02012900, 2018R1A2B3003643, RS202200197659, 2021R1A6A1A03043957, 2021R1F1A1064008, 2019R1I1A3A01058933, 2021R1F1A1060423, 2018R1A6A1A06024970
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RSJ1-9124, P1-0135
Ministerstwo Edukacji i Nauki
Ministry of Science and Technology, Taiwan
Nagoya University
Natural Science Foundation of Shandong Province
National Research University Higher School of Economics
Rheinische Friedrich-Wilhelms-Universität Bonn
Bundesministerium für Bildung, Wissenschaft und Forschung
Korea Research Environment Open Network

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