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Measurement of the inclusive B0s→ X+ℓ-ν semileptonic decay branching fraction

  • K. Abe
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , T. Aso
  • , V. Aulchenko
  • , T. Aushev
  • , T. Aziz
  • , S. Bahinipati
  • , A. M. Bakich
  • , V. Balagura
  • , Y. Ban
  • , S. Banerjee
  • , E. Barberio
  • , A. Bay
  • , I. Bedny
  • , K. Belous
  • , V. Bhardwaj
  • , U. Bitenc
  • , S. Blyth
  • A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, S. K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, A. Das, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, H. Fujii, M. Fujikawa, N. Gabyshev, A. Garmash, A. Go, G. Gokhroo, P. Goldenzweig, B. Golob, M. Grosse Perdekamp, H. Guler, H. Ha, J. Haba, K. Hara, T. Hara, Y. Hasegawa, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, L. Hinz, H. Hoedlmoser, T. Hokuue, Y. Horii, Y. Hoshi, K. Hoshina, S. Hou, W. S. Hou, Y. B. Hsiung, H. J. Hyun, Y. Igarashi, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, C. Jacoby, N. J. Joshi, M. Kaga, D. H. Kah, H. Kaji, S. Kajiwara, H. Kakuno, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, A. Kibayashi, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, E. Kurihara, A. Kusaka, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, Y. Liu, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumura, A. Matyja, S. McOnie, T. Medvedeva, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, J. Mueller, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nakahama, I. Nakamura, E. Nakano, M. Nakao, H. Nakayama, H. Nakazawa, Z. Natkaniec, K. Neichi, S. Nishida, K. Nishimura, Y. Nishio, I. Nishizawa, O. Nitoh, S. Noguchi, T. Nozaki, A. Ogawa, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, S. Ono, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, L. S. Peak, M. Pernicka, R. Pestotnik, M. Peters, L. E. Piilonen, A. Poluektov, J. Rorie, M. Rozanska, H. Sahoo, Y. Sakai, H. Sakaue, N. Sasao, T. R. Sarangi, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, C. Schwanda, A. J. Schwartz, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, L. Shang, M. Shapkin, C. P. Shen, H. Shibuya, S. Shinomiya, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, E. Solovieva, A. Somov, S. Stanic, M. Staric, J. Stypula, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, N. Taniguchi, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, Y. F. Tse, T. Tsuboyama, K. Uchida, Y. Uchida, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, J. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, L. Widhalm, J. Wiechczynski, E. Won, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, M. Yamaoka, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, N. Zwahlen
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • RAS - Budker Institute of Nuclear Physics
  • National Institute of Technology, Toyama College
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • Tata Institute of Fundamental Research
  • University of Cincinnati
  • The University of Sydney
  • Peking University
  • University of Melbourne
  • Institute for High Energy Physics
  • Panjab University
  • Jožef Stefan Institute
  • National United University Taiwan
  • H. Niewodniczanski Institute of Nuclear Physics
  • University of Maribor
  • University of Hawai'i at Mānoa
  • Fu Jen Catholic University
  • National Taiwan University
  • National Central University
  • Hanyang University
  • Yonsei University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • Nara Women's University
  • Princeton University
  • University of Ljubljana
  • University of Illinois at Urbana-Champaign
  • Riken BNL Research Center
  • Korea University
  • Nagoya University
  • The University of Osaka
  • Shinshu University
  • Tohoku University
  • Tohoku Gakuin University
  • Tokyo University of Agriculture and Technology
  • Kyungpook National University
  • Saga University
  • Institute of Science Tokyo
  • The Graduate University for Advanced Studies
  • Chiba University
  • Niigata University
  • Seoul National University
  • Justus Liebig University Giessen
  • Austrian Academy of Sciences
  • University of Pittsburgh
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University
  • Tokyo Metropolitan University
  • Toho University
  • Kanagawa University
  • Kyoto University
  • CAS - Institute of High Energy Physics
  • University of Nova Gorica
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to conferencePaperpeer-review

Abstract

Inclusive semileptonic B0s → X+ℓ-ν decays are studied for the first time using a 23.6 fb-1 data sample collected on the (5S) resonance with the Belle detector at the KEKB asym-metric energy e +e- collider. These decays are identified by the means of a lepton accompa- nied by a same-sign D+s meson originating from the other B0s in the event. The semileptonic branching fractions are measured in the electron and muon channels to be B(B0 s → X+e -ν) =(10.9 ± 1.0 ± 0.9)% and B(B0 s → X+μ-ν) = (9.2 ± 1.0 ± 0.8)%, respectively. Assuming an equalelectron and muon production rate in B 0s decays, a combined fit yields an average leptonic branch- ing fraction B(B0s → X+ℓ-ν) = (10.2 ± 0.8 ± 0.9)%.

Original languageEnglish
StatePublished - 2007
Event23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007 - Daegu, Korea, Republic of
Duration: 13 Aug 200718 Aug 2007

Conference

Conference23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007
Country/TerritoryKorea, Republic of
CityDaegu
Period13/08/0718/08/07

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