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Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality.

Publication ,  Journal Article
Prim, MT; Bernlochner, F; Metzner, F; Aihara, H; Asner, DM; Aushev, T; Ayad, R; Babu, V; Banerjee, S; Behera, P; Belous, K; Bennett, J; Gu, T ...
Published in: Physical review letters
September 2024

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.

Duke Scholars

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

September 2024

Volume

133

Issue

13

Start / End Page

131801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Prim, M. T., Bernlochner, F., Metzner, F., Aihara, H., Asner, D. M., Aushev, T., … Belle Collaboration. (2024). Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality. Physical Review Letters, 133(13), 131801. https://doi.org/10.1103/physrevlett.133.131801
Prim, M. T., F. Bernlochner, F. Metzner, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, et al. “Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality.Physical Review Letters 133, no. 13 (September 2024): 131801. https://doi.org/10.1103/physrevlett.133.131801.
Prim MT, Bernlochner F, Metzner F, Aihara H, Asner DM, Aushev T, et al. Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality. Physical review letters. 2024 Sep;133(13):131801.
Prim, M. T., et al. “Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality.Physical Review Letters, vol. 133, no. 13, Sept. 2024, p. 131801. Epmc, doi:10.1103/physrevlett.133.131801.
Prim MT, Bernlochner F, Metzner F, Aihara H, Asner DM, 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 TE, Budano A, Campajola M, Cao L, Červenkov D, Chang P, Cheon BG, 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 TV, Dubey S, Ecker P, Epifanov D, Ferber T, Ferlewicz D, Fulsom BG, Garg R, Gaur V, Giri A, Goldenzweig P, Gu T, Gudkova K, Hadjivasiliou C, Hara T, Hayashii H, Hazra S, Hedges MT, Herrmann D, Hernández Villanueva M, Hou W-S, Hsu C-L, Inami K, Inguglia G, Ipsita N, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Kiesling C, Kim CH, Kim DY, 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 SC, Lewis P, Li LK, Li Gioi L, Libby J, Liventsev D, Ma Y, Matsuda T, Matvienko D, Maurya SK, Meier F, Merola M, Miyabayashi K, Mizuk R, Mohanty GB, Nakamura I, Nakao M, Narwal D, Natkaniec Z, Natochii A, Nayak L, Nishida S, Ono H, Oskin P, Pakhlov P, Pakhlova G, Park S-H, Passeri A, Patra S, Pedlar TK, Pestotnik R, Piilonen LE, Podobnik T, Prencipe E, Röhrken M, Rout N, Russo G, Sandilya S, Santelj L, Savinov V, Schmolz P, Schnell G, Schwanda C, Seino Y, Senyo K, Shan W, Shiu J-G, Singh JB, Solovieva E, Starič M, Stottler ZS, Sumihama M, Takizawa M, Tanida K, Tenchini F, Tiwary R, Trabelsi K, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen SE, Varvell KE, Vossen A, Wang M-Z, Wang XL, Won E, Yabsley BD, Yan W, Yang SB, Yin JH, Yuan L, Zhang ZP, Zhilich V, Zhukova V, Belle Collaboration. Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality. Physical review letters. 2024 Sep;133(13):131801.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

September 2024

Volume

133

Issue

13

Start / End Page

131801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences