Journal article
Measurement of differential distributions of B →d∗ℓ ν ¯ ℓ and implications on
MT Prim, F Bernlochner, F Metzner, K Lieret, T Kuhr, I Adachi, H Aihara, SA Said, DM Asner, H Atmacan, V Aulchenko, T Aushev, R Ayad, V Babu, S Bahinipati, S Banerjee, M Bauer, P Behera, J Bennett, M Bessner Show all
Physical Review D | Published : 2023
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..
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Grants
Awarded by Ministry of Education
Funding Acknowledgements
This work, based on data collected using theBelle detector, which was operated until June 2010,was supported by the Ministry of Education, Culture,Sports, Science, and Technology (MEXT) of Japan,the Japan Society for the Promotion of Science (JSPS),and the Tau-Lepton Physics Research Center of NagoyaUniversity; the Australian Research Council includingGrants No. DP180102629, No. DP170102389,No.DP170102204,No.DE220100462,No. DP150103061, and No. FT130100303; AustrianFederal Ministry of Education, Science and Research(FWF) and FWF Austrian Science Fund No. P 31361-N36; the National Natural Science Foundation of Chinaunder Contracts No. 11675166, No. 11705209,No. 11975076, No. 12135005, No. 12175041 andNo. 12161141008; Key Research Program of FrontierSciences, Chinese Academy of Sciences (CAS), GrantNo. QYZDJ-SSW-SLH011; Project No. ZR2022JQ02 sup-ported by Shandong Provincial Natural Science Foundation;the Ministry of Education, Youth and Sports of the CzechRepublic under Contract No. LTT17020; the Czech ScienceFoundation Grant No. 22-18469S; Horizon 2020 ERCAdvanced Grant No. 884719 and ERC Starting Grant No. 947006 "InterLeptons" (European Union) ; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Atomic Energy (Project Identification No. RTI 4002) and the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. RS202200197659, No. 2019R1I1A3A01058933, No. 2021R1A6A1A03043957, No. 2021R1F1A1060423, No. 2021R1F1A1064008, and No. 2022R1A2C1003993; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information and KREONET and GLObal RIng network for Advanced Application Development GLORIAD; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 14.W03.31.0026, and the HSE University Basic Research Program, Moscow; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia) ; the Slovenian Research Agency Grants No. J1-9124 and No. P1-0135; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the United States Department of Energy and the National Science Foundation. These acknowledgements are not to be interpreted as an endorsement of any statement made by any of our institutes, funding agencies, governments, or their representatives. We thank Danny Van Dyk, Martin Jung, Zoltan Ligeti and Dean Robinson for useful discussions that helped to improve the scientific content of this manuscript. F. B. thanks LBNL for its hospitality. F. B. is supported by DFG Emmy-Noether Grant No. BE 6075/1-1. M. T. P. is supported by the Argelander Starter-Kit Grant of the University of Bonn. F. B., M. T. P., and F. M. are supported by BMBF Grant No. 05H21PDKBA. We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group and the Pacific Northwest National Laboratory (PNNL) Environmental Molecular Sciences Laboratory (EMSL) computing group for strong computing support; and the National Institute of Informatics, and Science Information NETwork 6 (SINET6) for valuable network support.