Measurements of q2 moments of inclusive B →xcℓ νℓ decays with hadronic tagging

R Van Tonder; L Cao; W Sutcliffe; M Welsch; FU Bernlochner; I Adachi; H Aihara; DM Asner; T Aushev; R Ayad; V Babu; P Behera; K Belous; J Bennett; M Bessner; V Bhardwaj; B Bhuyan; T Bilka; J Biswal; A Bobrov; D Bodrov; J Borah; A Bozek; M Bračko; P Branchini; A Budano; M Campajola; D Červenkov; MC Chang; P Chang; V Chekelian; A Chen; BG Cheon; K Chilikin; HE Cho; K Cho; SJ Cho; Y Choi; S Choudhury; D Cinabro; S Cunliffe; S Das; G De Nardo; G De Pietro; R Dhamija; F Di Capua; J Dingfelder; Z DoleŽal; TV Dong; S Dubey; D Epifanov; T Ferber; BG Fulsom; R Garg; V Gaur; N Gabyshev; A Giri; P Goldenzweig; E Graziani; T Gu; Y Guan; K Gudkova; C Hadjivasiliou; S Halder; O Hartbrich; K Hayasaka; H Hayashii; WS Hou; CL Hsu; T Iijima; K Inami; A Ishikawa; R Itoh; M Iwasaki; WW Jacobs; S Jia; Y Jin; KK Joo; AB Kaliyar; KH Kang; G Karyan; H Kichimi; C Kiesling; CH Kim; DY Kim; KH Kim; YK Kim; K Kinoshita; P Kodyš; T Konno; S Korpar; E Kovalenko; P KriŽan; R Kroeger; P Krokovny; T Kuhr; M Kumar; R Kumar; K Kumara; A Kuzmin

Journal article

Measurements of q2 moments of inclusive B →xcℓ νℓ decays with hadronic tagging

R Van Tonder, L Cao, W Sutcliffe, M Welsch, FU Bernlochner, I Adachi, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, J Biswal, A Bobrov Show all

Physical Review D | Published : 2021

DOI: 10.1103/PhysRevD.104.112011

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Abstract

We present the measurement of the first to fourth order moments of the four-momentum transfer squared, q2, of inclusive B→Xcℓ+νℓ decays using the full Belle dataset of 711 fb-1 of integrated luminosity at the (4S) resonance where ℓ=e, μ. The determination of these moments and their systematic uncertainties open new pathways to determine the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element Vcb using a reduced set of matrix elements of the heavy quark expansion. In order to identify and reconstruct the Xc system, we reconstruct one of the two B-mesons using machine learning techniques in fully hadronic decay modes. The moments are measured with progressively increasing threshold ..

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University of Melbourne Researchers

Martin Sevior Author

Eiasha Waheed Author

Phillip Urquijo Author

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Funding Acknowledgements

We thank Keri Vos, Kevin Olschewsky, and Matteo Fael for useful discussions about the subject matter of this manuscript. R. v. T., L. C., W. S., and F. U. B. were supported by the DFG Emmy-Noether Grant No. BE 6075/1-1. 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 5 (SINET5) for valuable network support. We acknowledge support from 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. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, and No. FT130100303; Austrian Federal Ministry of Education, Science and Research (FWF) and FWF Austrian Science Fund No. P 31361-N36; the National Natural Science Foundation of China under Contracts No. 11435013, No. 11475187, No. 11521505, No. 11575017, No. 11675166, and No. 11705209; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) , Grant No. QYZDJ-SSW-SLH011; the CAS Center for Excellence in Particle Physics (CCEPP) ; the Shanghai Pujiang Program under Grant No. 18PJ1401000; the Shanghai Science and Technology Committee (STCSM) under Grant No. 19ZR1403000; the Ministry of Education, Youth and Sports of the Czech Republic under Con-tract No. LTT17020; Horizon 2020 ERC Advanced 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 Volkswagen Stiftung; 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. 2016R1D1A1B01010135, No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2018R1D1A1B-07047294, No. 2019K1A3A7A09033840, and No. 2019-R1I1A3A01058933; 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, 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.