Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for

MT Prim; F Bernlochner; F Metzner; H Aihara; DM Asner; T Aushev; R Ayad; V Babu; S Banerjee; P Behera; K Belous; J Bennett; M Bessner; V Bhardwaj; B Bhuyan; T Bilka; D Biswas; D Bodrov; A Bondar; J Borah; M Bračko; P Branchini; TE Browder; A Budano; M Campajola; L Cao; D Červenkov; P Chang; BG Cheon; SK Choi; Y Choi; S Choudhury; J Cochran; S Das; N Dash; G De Nardo; G De Pietro; R Dhamija; F Di Capua; Z DoleŽal; TV Dong; S Dubey; P Ecker; D Epifanov; T Ferber; D Ferlewicz; BG Fulsom; R Garg; V Gaur; A Giri; P Goldenzweig; T Gu; K Gudkova; C Hadjivasiliou; T Hara; H Hayashii; S Hazra; MT Hedges; D Herrmann; M Hernández Villanueva; WS Hou; CL Hsu; K Inami; G Inguglia; N Ipsita; A Ishikawa; R Itoh; M Iwasaki; WW Jacobs; C Kiesling; CH Kim; DY Kim; KH Kim; P Kodyš; T Konno; A Korobov; S Korpar; E Kovalenko; P KriŽan; P Krokovny; T Kuhr; M Kumar; R Kumar; YJ Kwon; T Lam; SC Lee; P Lewis; LK Li; L Li Gioi; J Libby; D Liventsev; Y Ma; T Matsuda; D Matvienko; SK Maurya; F Meier; M Merola; K Miyabayashi; R Mizuk; GB Mohanty

Journal article

Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for

MT Prim, F Bernlochner, F Metzner, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Biswas, D Bodrov, A Bondar, J Borah Show all

Physical Review Letters | AMER PHYSICAL SOC | Published : 2024

DOI: 10.1103/PhysRevLett.133.131801

Abstract

We measure the complete set of angular coefficients Ji for exclusive B¯→D∗ℓν¯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¯→D∗ transition and the Cabibbo-Kobayashi-Maskawa matrix element |Vcb|. Using recent lattice QCD calculations for the hadronic form factors, we find |Vcb|=(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..

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University of Melbourne Researchers

Phillip Urquijo Author

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Funding Acknowledgements

This work, based on data collected using the Belle 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 Nagoya University; the Australian Research Council including Grants No. DP210101900, No. DP210102831, No. DE220100462, No. LE210100098, and No. LE230100085; Austrian Federal Ministry of Education, Science and Research (FWF) and FWF Austrian Science Fund [Grant DOI: 10.55776/P31361N36]; National Key R&D Program of China under Contract No. 2022YFA1601903, National Natural Science Foundation of China and research Grants No. 11575017, No. 11761141009, No. 11705209, No. 11975076, No. 12135005, No. 12150004, No. 12161141008, and No. 12175041, and Shandong Provincial Natural Science Foundation Project No. ZR2022JQ02; the Czech Science Foundation Grant No. 22-18469S; Horizon 2020 ERC Advanced Grant No. 884719 and ERC Starting Grant No. 947006 "InterLeptons" (European Union); the German Research Foundation (DFG) Emmy-Noether Grant No. 526218088; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Atomic Energy (Project Identification No. RTI 4002), the Department of Science and Technology of India, and the UPES (India) SEED finding programs No. UPES/R& D-SEED-INFRA/17052023/01 and No. UPES/R&D-SOE/20062022/06; 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/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, and the State Agency for Research of the Spanish Ministry of Science and Innovation through Grant No. PID2022-136510NB-C33 (Spain); the Swiss National Science Foundation; the Ministry of Education and the National Science and Technology Council 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 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.