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Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment

Publication ,  Journal Article
Abudinén, F; Adamczyk, K; Aggarwal, L; Ahmed, H; Aihara, H; Akopov, N; Aloisio, A; Anh Ky, N; Asner, DM; Atmacan, H; Aushev, T; Aushev, V ...
Published in: Physical Review D
April 1, 2023
Published version (DOI)

We present measurements of the first to fourth moments of the lepton mass squared q2 of B→Xcℓν¯ℓ decays for ℓ=e, μ and with Xc a hadronic system containing a charm quark. These results use a sample of electron-positron collisions at the ϒ(4S) resonance corresponding to 62.8 fb-1 of integrated luminosity and collected by the Belle II 2 experiment in 2019 and 2020. To identify the Xc system and reconstruct q2, one of the B mesons from an ϒ(4S)→BB¯ decay is fully reconstructed in a hadronic decay mode using a multivariate B tagging algorithm. We report raw and central moments for q2>1.5 GeV2/c4 up to q2>8.5 GeV2/c4, probing up to 77% of the accessible B→Xcℓν¯ℓ phase space. This is the first measurement of moments in the experimentally challenging range of [1.5,2.5] GeV2/c4. The results can be used for a new determination of |Vcb| using inclusive B→Xcℓν¯ℓ decays.

Duke Scholars

Anselm G. Vossen
Author Anselm G. Vossen Physics

Published In

Physical Review D

DOI

10.1103/PhysRevD.107.072002

EISSN

2470-0029

ISSN

2470-0010

Publication Date

April 1, 2023

Volume

107

Issue

7
 

Citation

APA
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ICMJE
MLA
NLM
Abudinén, F., Adamczyk, K., Aggarwal, L., Ahmed, H., Aihara, H., Akopov, N., … Ferber, T. (2023). Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment. Physical Review D, 107(7). https://doi.org/10.1103/PhysRevD.107.072002
Abudinén, F., K. Adamczyk, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, et al. “Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment.” Physical Review D 107, no. 7 (April 1, 2023). https://doi.org/10.1103/PhysRevD.107.072002.
Abudinén F, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al. Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment. Physical Review D. 2023 Apr 1;107(7).
Abudinén, F., et al. “Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment.” Physical Review D, vol. 107, no. 7, Apr. 2023. Scopus, doi:10.1103/PhysRevD.107.072002.
Abudinén F, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, Asner DM, Atmacan H, Aushev T, Aushev V, Babu V, Bacher S, Bae H, Baehr S, Bahinipati S, Bambade P, Banerjee S, Barrett M, Baudot J, Bauer M, Baur A, Becker J, Behera PK, Bennett JV, Bernlochner FU, Bertemes M, Bertholet E, Bessner M, Bettarini S, Bhuyan B, Bianchi F, Bilka T, Biswas D, Bobrov A, Bodrov D, Bolz A, Borah J, Bozek A, Bračko M, Branchini P, Briere RA, Browder TE, Budano A, Bussino S, Campajola M, Cao L, Casarosa G, Cecchi C, Červenkov D, Chang MC, Chang P, Cheaib R, Cheema P, Chekelian V, Chen C, Chen YT, Cheon BG, Chilikin K, Chirapatpimol K, Cho HE, Cho K, Cho SJ, Choi SK, Choudhury S, Cinabro D, Corona L, Cremaldi LM, Cunliffe S, Czank T, Dattola F, De La Cruz-Burelo E, De Marino G, De Nardo G, De Nuccio M, De Pietro G, De Sangro R, Destefanis M, Dey S, De Yta-Hernandez A, Dhamija R, Di Canto A, Di Capua F, Dingfelder J, DoleŽal Z, Domínguez Jiménez I, Dong TV, Dorigo M, Dort K, Dossett D, Dreyer S, Dubey S, Duell S, Dujany G, Ecker P, Eliachevitch M, Epifanov D, Feichtinger P, Ferber T. Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment. Physical Review D. 2023 Apr 1;107(7).

Published In

Physical Review D

DOI

10.1103/PhysRevD.107.072002

EISSN

2470-0029

ISSN

2470-0010

Publication Date

April 1, 2023

Volume

107

Issue

7