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Measurement of γ 5S decays to B0 and B+ mesons

  • A. Drutskoy
  • , I. Adachi
  • , H. Aihara
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , V. Bhardwaj
  • , M. Bischofberger
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • , Y. Chao
  • , A. Chen
  • , P. Chen
  • , B. G. Cheon
  • , S. K. Choi
  • , Y. Choi
  • , J. Dalseno
  • M. Danilov, Z. Doležal, W. Dungel, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, N. Katayama, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, S. H. Lee, J. Li, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, T. Mori, R. Mussa, Y. Nagasaka, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, A. Poluektov, S. Ryu, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, F. Simon, P. Smerkol, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, T. Tsuboyama, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, M. Z. Wang, P. Wang, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc
  • University of Cincinnati
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • RAS - Budker Institute of Nuclear Physics
  • Novosibirsk State University
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • The University of Sydney
  • Panjab University
  • Nara Women's University
  • H. Niewodniczanski Institute of Nuclear Physics
  • Jožef Stefan Institute
  • University of Maribor
  • University of Hawai'i at Mānoa
  • National Taiwan University
  • National Central University
  • Hanyang University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Technische Universität München
  • Charles University
  • Austrian Academy of Sciences
  • University of Ljubljana
  • Korea University
  • Tohoku University
  • Tohoku Gakuin University
  • Kyungpook National University
  • Nagoya University
  • Yonsei University
  • University of Melbourne
  • Tokyo Metropolitan University
  • Justus Liebig University Giessen
  • University of Science and Technology of China
  • Niigata University
  • Tata Institute of Fundamental Research
  • National Institute for Nuclear Physics
  • Hiroshima Institute of Technology
  • Tokyo University of Agriculture and Technology
  • Kanagawa University
  • Seoul National University
  • Virginia Polytechnic Institute and State University
  • Institute for High Energy Physics
  • University of Nova Gorica
  • Osaka Metropolitan University
  • CAS - Institute of High Energy Physics
  • Nippon Dental University
  • Karlsruhe Institute of Technology

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Decays of the Υ(5S) resonance to channels with B+ and B0 mesons are studied using a 23.6fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Fully reconstructed B+→J/ψK+, B0→J/ψK*0, B+→D̄+, and B0→D-π+ decays are used to obtain the charged and neutral B production rates per bb̄ event, f(B +)=(72.1-3.8+3.9±5.0)% and f(B0)=(77.0-5.6+5.8±6.1)%. Assuming equal rates to B+ and B0 mesons in all channels produced at the Υ(5S) energy, we measure the fractions for transitions to two-body and three-body channels with B meson pairs, f(BB̄)=(5.5-0.9+1.0±0.4)%, f(BB̄*+B*B̄)=(13. 7±1.3±1.1)%, f(B*B̄ *)=(37.5-1.9+2.1±3.0)%, f(BB̄π)=(0.0±1. 2±0.3)%, f(BB̄*π+B *B̄π)=(7.3-2.1+2.3±0.8)%, and f(B *B̄*π)=(1.0-1.3+1. 4±0.4)%. The latter three fractions are obtained assuming isospin conservation.

Original languageEnglish
Article number112003
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number11
DOIs
StatePublished - 22 Jun 2010

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