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

F. Abudinén, K. Adamczyk, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, V. Babu, S. Bacher, H. Bae, S. Baehr, S. Bahinipati, P. Bambade, Sw Banerjee, M. BarrettJ. Baudot, M. Bauer, A. Baur, J. Becker, P. K. Behera, J. V. Bennett, F. U. Bernlochner, M. Bertemes, E. Bertholet, M. Bessner, S. Bettarini, B. Bhuyan, F. Bianchi, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, A. Bolz, J. Borah, A. Bozek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, S. Bussino, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, D. Červenkov, M. C. Chang, P. Chang, R. Cheaib, P. Cheema, V. Chekelian, C. Chen, Y. T. Chen, B. G. Cheon, K. Chilikin, K. Chirapatpimol, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, S. Choudhury, D. Cinabro, L. Corona, L. M. Cremaldi, S. Cunliffe, T. Czank, F. Dattola, E. De La Cruz-Burelo, G. De Marino, G. De Nardo, M. De Nuccio, G. De Pietro, R. De Sangro, M. Destefanis, S. Dey, A. De Yta-Hernandez, R. Dhamija, A. Di Canto, F. Di Capua, J. Dingfelder, Z. DoleŽal, I. Domínguez Jiménez, T. V. Dong, M. Dorigo, K. Dort, D. Dossett, S. Dreyer, S. Dubey, S. Duell, G. Dujany, P. Ecker, M. Eliachevitch, D. Epifanov, P. Feichtinger, T. Ferber, D. Ferlewicz, T. Fillinger, C. Finck, G. Finocchiaro, S. Fiore, K. Flood, A. Fodor, F. Forti, B. G. Fulsom, A. Gabrielli, E. Ganiev, M. Garcia-Hernandez, R. Garg, V. Gaur, A. Gaz, A. Gellrich, R. Giordano, A. Giri, A. Glazov, B. Gobbo, R. Godang, P. Goldenzweig, P. Grace, W. Gradl, E. Graziani, D. Greenwald, T. Gu, K. Gudkova, J. Guilliams, C. Hadjivasiliou, S. Halder, T. Hara, O. Hartbrich, K. Hayasaka, H. Hayashii, S. Hazra, C. Hearty, M. T. Hedges, I. Heredia De La Cruz, M. Hernández Villanueva, A. Hershenhorn, T. Higuchi, E. C. Hill, M. Hohmann, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, S. Ito, R. Itoh, M. Iwasaki, P. Jackson, W. W. Jacobs, D. E. Jaffe, E. J. Jang, Q. P. Ji, S. Jia, Y. Jin, H. Junkerkalefeld, H. Kakuno, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, R. Karl, G. Karyan, T. Kawasaki, C. Ketter, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, P. Kodyš, T. Koga, S. Kohani, K. Kojima, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, T. M.G. Kraetzschmar, P. KriŽan, P. Krokovny, T. Kuhr, J. Kumar, M. Kumar, R. Kumar, K. Kumara, T. Kunigo, S. Kurz, A. Kuzmin, Y. J. Kwon, S. Lacaprara, Y. T. Lai, C. La Licata, K. Lalwani, T. Lam, L. Lanceri, J. S. Lange, K. Lautenbach, R. Leboucher, F. R. Le Diberder, S. C. Lee, P. Leitl, D. Levit, P. M. Lewis, C. Li, L. K. Li, S. X. Li, Y. B. Li, J. Libby, K. Lieret, Z. Liptak, Q. Y. Liu, D. Liventsev, S. Longo, A. Lozar, T. Lueck, C. Lyu, M. Maggiora, R. Maiti, S. Maity, R. Manfredi, E. Manoni, C. Marinas, L. Martel, A. Martini, L. Massaccesi, M. Masuda, K. Matsuoka, D. Matvienko, J. A. McKenna, F. Meier, M. Merola, F. Metzner, M. Milesi, C. Miller, K. Miyabayashi, R. Mizuk, G. B. Mohanty, N. Molina-Gonzalez, S. Moneta, H. Moon, H. G. Moser, M. Mrvar, F. Mueller, C. Murphy, I. Nakamura, K. R. Nakamura, M. Nakao, H. Nakayama, M. Naruki, A. Natochii, L. Nayak, M. Nayak, G. Nazaryan, C. Niebuhr, N. K. Nisar, S. Nishida, K. Nishimura, K. Ogawa, S. Ogawa, Y. Onishchuk, H. Ono, P. Oskin, H. Ozaki, P. Pakhlov, G. Pakhlova, A. Paladino, T. Pang, A. Panta, S. Pardi, K. Parham, H. Park, S. H. Park, A. Passeri, A. Pathak, S. Patra, S. Paul, T. K. Pedlar, R. Peschke, R. Pestotnik, F. Pham, L. E. Piilonen, G. Pinna Angioni, P. L.M. Podesta-Lerma, T. Podobnik, S. Pokharel, L. Polat, V. Popov, C. Praz, S. Prell, E. Prencipe, M. T. Prim, H. Purwar, P. Rados, S. Raiz, S. Reiter, M. Remnev, I. Ripp-Baudot, G. Rizzo, L. B. Rizzuto, S. H. Robertson, D. Rodríguez Pérez, J. M. Roney, A. Rostomyan, N. Rout, M. Rozanska, G. Russo, D. Sahoo, D. A. Sanders, S. Sandilya, A. Sangal, L. Santelj, Y. Sato, V. Savinov, B. Scavino, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, A. Selce, K. Senyo, J. Serrano, M. E. Sevior, C. Sfienti, V. Shebalin, T. Shillington, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, J. Skorupa, R. J. Sobie, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, S. Stefkova, Z. S. Stottler, R. Stroili, M. Sumihama, K. Sumisawa, W. Sutcliffe, S. Y. Suzuki, H. Svidras, M. Tabata, M. Takahashi, M. Takizawa, U. Tamponi, S. Tanaka, K. Tanida, H. Tanigawa, N. Taniguchi, F. Tenchini, R. Tiwary, D. Tonelli, E. Torassa, N. Toutounji, K. Trabelsi, M. Uchida, I. Ueda, S. Uehara, T. Uglov, K. Unger, Y. Unno, K. Uno, S. Uno, Y. Ushiroda, S. E. Vahsen, R. Van Tonder, G. S. Varner, K. E. Varvell, A. Vinokurova, L. Vitale, V. Vobbilisetti, A. Vossen, E. Waheed, H. M. Wakeling, E. Wang, M. Z. Wang, X. L. Wang, A. Warburton, M. Watanabe, S. Watanuki, M. Welsch, C. Wessel, H. Windel, E. Won, X. P. Xu, B. D. Yabsley, S. Yamada, W. Yan, S. B. Yang, H. Ye, J. H. Yin, Y. M. Yook, K. Yoshihara, C. Z. Yuan, Y. Yusa, L. Zani, Y. Zhai, Y. Zhang, V. Zhilich, Q. D. Zhou, X. Y. Zhou, V. I. Zhukova, R. Žlebčík

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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.

Original languageEnglish
Article number072002
JournalPhysical Review D
Volume107
Issue number7
DOIs
StatePublished - 1 Apr 2023

Funding

FundersFunder number
CIDEGENT/2018/020 Ministry of Science and Technology and ResearchMOST107-2119-M-002-035-MY3, MOST106-2112-M-002-005-MY3
Chinese Academy of Sciences and ResearchQYZDJ-SSW-SLH011
GLORIAD
Global Ring Network for Advanced Application Development
Horizon 2020 ERC-Advanced267104, 884719
Horizon 2020 ERC-Consolidator819127
Horizon 2020 Marie Sklodowska-Curie822070
Israel Ministry of Science3-16543
National Natural Science Foundation of China and Research11521505, 11761141009, 11975076, 11575017, 11675166, 11705209
SEP-CINVESTAV237
Science Committee of the Republic of Armenia20TTCG-1C010
Seventh FrameworkPIEF-GA-2013-622527
Shanghai Pujiang Program18PJ1401000
Slovenian Research Agency and ResearchJ1-9124, P1-0135
TUBITAK ULAKBIM
U.S. Department of Energy and ResearchDE-SC0010007, DE-AC06-76RLO1830, DE-SC0010118, DE-SC0010504, DE-SC0012704, DE-SC0010073, DE-SC0011784, DE-SC0021274, DE-SC0022350, DE-SC0019230, DE-SC0009824, DE-SC0007983, DE-SC0009973
University of Tabuk ResearchS-0256-1438, S-0280-1439
National Science FoundationPHY-2111604, PHY-1913789
National Science Foundation
Alexander von Humboldt-Stiftung
Univerzita Karlova v PrazeSVV 260448
Univerzita Karlova v Praze
Canarie
Horizon 2020 Framework Programme947006
Horizon 2020 Framework Programme
Vietnam Academy of Science and TechnologyDL0000.05/21-23
Vietnam Academy of Science and Technology
Thailand Center of Excellence in Physics
Compute Canada
National Research Foundation of Ukraine2020.02/0257
National Research Foundation of Ukraine
Natural Sciences and Engineering Research Council of Canada
European Research Council
Australian Research CouncilDP170102204, FT120100745, DP180102629, DP150103061, DE220100462, FT130100018, DP170102389, FT130100303
Australian Research Council
Department of Science and Technology, Ministry of Science and Technology, India
Department of Atomic Energy, Government of IndiaRTI 4002
Department of Atomic Energy, Government of India
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Japan Society for the Promotion of Science16H06492, 18H05226, 18K03621, 26400255, 22H00144, 19H00682, 26220706, 17H01133, 16K05323, 16H03993, 16H03968, 17H05405, 18H03710
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
United States-Israel Binational Science Foundation2016113
United States-Israel Binational Science Foundation
Ministerstvo Školství, Mládeže a TělovýchovyLTT17020
Ministerstvo Školství, Mládeže a Tělovýchovy
Grantová Agentura České Republiky22-18469S
Grantová Agentura České Republiky
Bundesministerium für Bildung und Forschung
Austrian Science FundP 31361-N36
Austrian Science Fund
Ministry of Education
Ministry of Higher Education, MalaysiaFOINS-296, CB-180023, CB-236394, CB-254409, CB-221329
Ministry of Higher Education, Malaysia
Generalitat Valenciana
Ministry of Education and Science of the Russian Federation
Korea Institute of Science and Technology Information
National Research Foundation of Korea2022R1-A2C-1003993, 2018R1-A2B-3003643, 2018R1-A6A1A-06024970, 2016R1-D1A1B-02012900, RS-2022-00197659, 2018R1-D1A1B-07047294, 2019R1-I1A3A-01058933
National Research Foundation of Korea
Israel Science Foundation2476/17
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Max-Planck-Gesellschaft
Narodowe Centrum Nauki
Universiti Malaya
Ministerstwo Edukacji i Nauki
Centre National de la Recherche Scientifique
Akademi Sains Malaysia
Natural Science Foundation of Shandong ProvinceZR2022JQ02
Natural Science Foundation of Shandong Province
National Research University Higher School of Economics
Horizon 2020700525, 101026516
Horizon 2020
Ministry of Education and Science of Ukraine
Agencia Estatal de InvestigaciónRYC2020-029875-I
Agencia Estatal de Investigación
National Institute of Informatics
Institut National de Physique Nucléaire et de Physique des Particules
Bundesministerium für Bildung, Wissenschaft und Forschung
CAS Center for Excellence in Particle Physics
Liaoning Revitalization Talents ProgramXLYC1807135
Liaoning Revitalization Talents Program
Korea Research Environment Open Network

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