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Measurement of Differential Branching Fractions of Inclusive B →xuℓ+νℓ Decays

  • L. Cao
  • , W. Sutcliffe
  • , R. Van Tonder
  • , F. U. Bernlochner
  • , I. Adachi
  • , H. Aihara
  • , D. M. Asner
  • , T. Aushev
  • , R. Ayad
  • , V. Babu
  • , S. Bahinipati
  • , P. Behera
  • , K. Belous
  • , J. Bennett
  • , M. Bessner
  • , T. Bilka
  • , J. Biswal
  • , A. Bobrov
  • , M. Bračko
  • , P. Branchini
  • T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. C. Chang, P. Chang, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. J. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, T. Czank, N. Dash, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. DoleŽal, T. V. Dong, S. Dubey, D. Epifanov, T. Ferber, D. Ferlewicz, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, T. Gu, K. Gudkova, S. Halder, T. Hara, O. Hartbrich, K. Hayasaka, M. Hernandez Villanueva, W. S. Hou, C. L. Hsu, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, E. J. Jang, S. Jia, Y. Jin, K. K. Joo, J. Kahn, K. H. Kang, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, S. H. Kim, Y. K. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, M. Kumar, R. Kumar, K. Kumara, A. Kuzmin, Y. J. Kwon, S. C. Lee, C. H. Li, J. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, C. Macqueen, M. Masuda, M. Merola, F. Metzner, K. Miyabayashi, R. Mizuk, G. B. Mohanty, S. Mohanty, M. Mrvar, M. Nakao, A. Natochii, L. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, G. Pakhlova, S. Pardi, H. Park, S. H. Park, A. Passeri, S. Patra, S. Paul, T. K. Pedlar, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, M. Rozanska, G. Russo, D. Sahoo, S. Sandilya, A. Sangal, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, C. P. Shen, J. G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Starič, J. F. Strube, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, Y. Tao, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, S. Uno, P. Urquijo, S. E. Vahsen, G. Varner, K. E. Varvell, E. Waheed, C. H. Wang, E. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, S. Watanuki, O. Werbycka, E. Won, B. D. Yabsley, W. Yan, S. B. Yang, H. Ye, J. H. Yin, Z. P. Zhang, V. Zhilich, V. Zhukova
  • University of Bonn
  • German Electron Synchrotron
  • The Graduate University for Advanced Studies
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • Brookhaven National Laboratory
  • Higher School of Economics
  • University of Tabuk
  • Indian Institute of Technology Bhubaneswar
  • Indian Institute of Technology Madras
  • Institute for High Energy Physics
  • University of Mississippi
  • University of Hawai'i at Mānoa
  • Charles University
  • Jožef Stefan Institute
  • RAS - Budker Institute of Nuclear Physics
  • Novosibirsk State University
  • University of Maribor
  • National Institute for Nuclear Physics
  • University of Naples Federico II
  • Fu Jen Catholic University
  • National Taiwan University
  • Hanyang University
  • RAS - P.N. Lebedev Physics Institute
  • Korea Institute of Science and Technology Information
  • Yonsei University
  • Sungkyunkwan University
  • Indian Institute of Technology Hyderabad
  • Wayne State University
  • Fudan University
  • University of Melbourne
  • University of Göttingen
  • Pacific Northwest National Laboratory
  • Panjab University
  • Virginia Polytechnic Institute and State University
  • Karlsruhe Institute of Technology
  • University of Pittsburgh
  • Tata Institute of Fundamental Research
  • Niigata University
  • The University of Sydney
  • Nagoya University
  • Osaka Metropolitan University
  • Indiana University Bloomington
  • Gyeongsang National University
  • Chonnam National University
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Soongsil University
  • Seoul National University
  • University of Cincinnati
  • Kitasato University
  • University of Ljubljana
  • Ludwig Maximilian University of Munich
  • Kennesaw State University
  • Malaviya National Institute of Technology
  • Punjab Agricultural University
  • Kyungpook National University
  • Liaoning Normal University
  • Peking University
  • The University of Osaka
  • Nara Women's University
  • Utkal University
  • Austrian Academy of Sciences
  • Kyoto Sangyo University
  • Toho University
  • Nippon Dental University
  • Indian Institute of Science Education and Research Mohali
  • Technical University of Munich
  • Luther College, Decorah
  • Jülich Research Centre
  • H. Niewodniczanski Institute of Nuclear Physics
  • Tohoku University
  • University of the Basque Country
  • Ikerbasque Basque Foundation for Science
  • Yamagata University
  • Gifu University
  • Tokyo Metropolitan University
  • RIKEN
  • Showa Pharmaceutical University
  • Japan Atomic Energy Agency
  • University of Florida
  • Université Paris-Saclay
  • Institute of Science Tokyo
  • National United University Taiwan
  • CAS - Institute of High Energy Physics
  • Korea University
  • University of Science and Technology of China

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The first measurements of differential branching fractions of inclusive semileptonic B→Xuℓ+νℓ decays are performed using the full Belle data set of 711 fb-1 of integrated luminosity at the (4S) resonance and for ℓ=e, μ. With the availability of these measurements, new avenues for future shape-function model-independent determinations of the Cabibbo-Kobayashi-Maskawa matrix element |Vub| can be pursued to gain new insights in the existing tension with respect to exclusive determinations. The differential branching fractions are reported as a function of the lepton energy, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting the backgrounds from semileptonic B→Xcℓ+νℓ decays and other processes, and corrected for resolution and acceptance effects.

Original languageEnglish
Article numberA87
JournalPhysical Review Letters
Volume127
Issue number26
DOIs
StatePublished - 24 Dec 2021

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