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Cao L, Sutcliffe W, Van Tonder R, et al. Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays. Phys Rev Lett. 2021;127(26):261801doi: 10.1103/PhysRevLett.127.261801.
Cao, L., Sutcliffe, W., Van Tonder, R., Bernlochner, F. U., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswal, J., Bobrov, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. C., Chang, P., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. J., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Czank, T., Dash, N., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Epifanov, D., Ferber, T., Ferlewicz, D., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Gu, T., Gudkova, K., Halder, S., Hara, T., Hartbrich, O., Hayasaka, K., Hernandez Villanueva, M., Hou, W. S., Hsu, C. L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. J., Jia, S., Jin, Y., Joo, K. K., Kahn, J., Kang, K. H., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, S. H., Kim, Y. K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. J., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., MacQueen, C., Masuda, M., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mohanty, S., Mrvar, M., Nakao, M., Natochii, A., Nayak, L., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlova, G., Pardi, S., Park, H., Park, S. H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Vahsen, S. E., Varner, G., Varvell, K. E., Waheed, E., Wang, C. H., Wang, E., Wang, M. Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Zhang, Z. P., Zhilich, V., Zhukova, V. (2021). Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays. Physical review letters, 127(26), 261801. https://doi.org/10.1103/PhysRevLett.127.261801
Cao, L, et al. "Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays." Physical review letters vol. 127,26 (2021): 261801. doi: https://doi.org/10.1103/PhysRevLett.127.261801
Cao L, Sutcliffe W, Van Tonder R, Bernlochner FU, Adachi I, Aihara H, Asner DM, Aushev T, Ayad R, Babu V, Bahinipati S, Behera P, Belous K, Bennett J, Bessner M, Bilka T, Biswal J, Bobrov A, Bračko M, Branchini P, Browder TE, Budano A, Campajola M, Červenkov D, Chang MC, Chang P, Cheon BG, Chilikin K, Cho HE, Cho K, Cho SJ, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Czank T, Dash N, De Pietro G, Dhamija R, Di Capua F, Dingfelder J, Doležal Z, Dong TV, Dubey S, Epifanov D, Ferber T, Ferlewicz D, Frey A, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Giri A, Goldenzweig P, Gu T, Gudkova K, Halder S, Hara T, Hartbrich O, Hayasaka K, Hernandez Villanueva M, Hou WS, Hsu CL, Inami K, Ishikawa A, Itoh R, Iwasaki M, Jacobs WW, Jang EJ, Jia S, Jin Y, Joo KK, Kahn J, Kang KH, Kichimi H, Kiesling C, Kim CH, Kim DY, Kim SH, Kim YK, Kimmel TD, Kinoshita K, Kodyš P, Konno T, Korobov A, Korpar S, Kovalenko E, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kumar M, Kumar R, Kumara K, Kuzmin A, Kwon YJ, Lee SC, Li CH, Li J, Li LK, Li YB, Li Gioi L, Libby J, Lieret K, Liventsev D, MacQueen C, Masuda M, Merola M, Metzner F, Miyabayashi K, Mizuk R, Mohanty GB, Mohanty S, Mrvar M, Nakao M, Natochii A, Nayak L, Niiyama M, Nisar NK, Nishida S, Nishimura K, Ogawa S, Ono H, Onuki Y, Oskin P, Pakhlova G, Pardi S, Park H, Park SH, Passeri A, Patra S, Paul S, Pedlar TK, Piilonen LE, Podobnik T, Popov V, Prencipe E, Prim MT, Röhrken M, Rostomyan A, Rout N, Rozanska M, Russo G, Sahoo D, Sandilya S, Sangal A, Santelj L, Sanuki T, Savinov V, Schnell G, Schueler J, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Sevior ME, Shapkin M, Sharma C, Shen CP, Shiu JG, Shwartz B, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tao Y, Tenchini F, Trabelsi K, Uchida M, Uglov T, Uno S, Urquijo P, Vahsen SE, Varner G, Varvell KE, Waheed E, Wang CH, Wang E, Wang MZ, Wang P, Wang XL, Watanabe M, Watanuki S, Werbycka O, Won E, Yabsley BD, Yan W, Yang SB, Ye H, Yin JH, Zhang ZP, Zhilich V, Zhukova V. Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays. Phys Rev Lett. 2021 Dec 24;127(26):261801. doi: 10.1103/PhysRevLett.127.261801. PMID: 35029480.
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Phys Rev Lett. 2021 Dec 24;127(26):261801. doi: 10.1103/PhysRevLett.127.261801.

Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays.

Physical review letters

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,

Affiliations

  1. University of Bonn, 53115 Bonn.
  2. Deutsches Elektronen-Synchrotron, 22607 Hamburg.
  3. SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
  4. High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  5. Department of Physics, University of Tokyo, Tokyo 113-0033.
  6. Brookhaven National Laboratory, Upton, New York 11973.
  7. National Research University Higher School of Economics, Moscow 101000.
  8. Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  9. Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
  10. Indian Institute of Technology Madras, Chennai 600036.
  11. Institute for High Energy Physics, Protvino 142281.
  12. University of Mississippi, University, Mississippi 38677.
  13. University of Hawaii, Honolulu, Hawaii 96822.
  14. Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  15. J. Stefan Institute, 1000 Ljubljana.
  16. Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  17. Novosibirsk State University, Novosibirsk 630090.
  18. Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000 Maribor.
  19. INFN-Sezione di Roma Tre, I-00146 Roma.
  20. INFN-Sezione di Napoli, I-80126 Napoli.
  21. Università di Napoli Federico II, I-80126 Napoli.
  22. Department of Physics, Fu Jen Catholic University, Taipei 24205.
  23. Department of Physics, National Taiwan University, Taipei 10617.
  24. Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763.
  25. P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  26. Korea Institute of Science and Technology Information, Daejeon 34141.
  27. Yonsei University, Seoul 03722.
  28. Sungkyunkwan University, Suwon 16419.
  29. Indian Institute of Technology Hyderabad, Telangana 502285.
  30. Wayne State University, Detroit, Michigan 48202.
  31. Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583.
  32. Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443.
  33. School of Physics, University of Melbourne, Victoria 3010.
  34. II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen.
  35. Pacific Northwest National Laboratory, Richland, Washington 99352.
  36. Panjab University, Chandigarh 160014.
  37. Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
  38. Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
  39. University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
  40. Tata Institute of Fundamental Research, Mumbai 400005.
  41. Niigata University, Niigata 950-2181.
  42. School of Physics, University of Sydney, New South Wales 2006.
  43. Graduate School of Science, Nagoya University, Nagoya 464-8602.
  44. Osaka City University, Osaka 558-8585.
  45. Indiana University, Bloomington, Indiana 47408.
  46. Gyeongsang National University, Jinju 52828.
  47. Chonnam National University, Gwangju 61186.
  48. Kyungpook National University, Daegu 41566.
  49. Max-Planck-Institut für Physik, 80805 München.
  50. Soongsil University, Seoul 06978.
  51. Seoul National University, Seoul 08826.
  52. University of Cincinnati, Cincinnati, Ohio 45221.
  53. Kitasato University, Sagamihara 252-0373.
  54. Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
  55. Ludwig Maximilians University, 80539 Munich.
  56. Kennesaw State University, Kennesaw, Georgia 30144.
  57. Malaviya National Institute of Technology Jaipur, Jaipur 302017.
  58. Punjab Agricultural University, Ludhiana 141004.
  59. Liaoning Normal University, Dalian 116029.
  60. Peking University, Beijing 100871.
  61. Research Center for Nuclear Physics, Osaka University, Osaka 567-0047.
  62. Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
  63. Nara Women's University, Nara 630-8506.
  64. Utkal University, Bhubaneswar 751004.
  65. Institute of High Energy Physics, Vienna 1050.
  66. Kyoto Sangyo University, Kyoto 603-8555.
  67. Toho University, Funabashi 274-8510.
  68. Nippon Dental University, Niigata 951-8580.
  69. Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
  70. Department of Physics, Technische Universität München, 85748 Garching.
  71. Luther College, Decorah, Iowa 52101.
  72. Forschungszentrum Jülich, 52425 Jülich.
  73. H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  74. Department of Physics, Tohoku University, Sendai 980-8578.
  75. Department of Physics, University of the Basque Country UPV/EHU, 48080 Bilbao.
  76. IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
  77. Yamagata University, Yamagata 990-8560.
  78. Gifu University, Gifu 501-1193.
  79. Tokyo Metropolitan University, Tokyo 192-0397.
  80. J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  81. Meson Science Laboratory, Cluster for Pioneering Research, RIKEN, Saitama 351-0198.
  82. Showa Pharmaceutical University, Tokyo 194-8543.
  83. INFN-Sezione di Torino, I-10125 Torino.
  84. Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195.
  85. University of Florida, Gainesville, Florida 32611.
  86. Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay.
  87. Tokyo Institute of Technology, Tokyo 152-8550.
  88. National United University, Miao Li 36003.
  89. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
  90. Korea University, Seoul 02841.
  91. Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026.

PMID: 35029480 DOI: 10.1103/PhysRevLett.127.261801

Abstract

The first measurements of differential branching fractions of inclusive semileptonic B→X_{u}ℓ^{+}ν_{ℓ} decays are performed using the full Belle data set of 711  fb^{-1} of integrated luminosity at the ϒ(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 |V_{ub}| 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→X_{c}ℓ^{+}ν_{ℓ} decays and other processes, and corrected for resolution and acceptance effects.

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