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Search for Bs0 → hh decays at the Y5S resonance

  • C. C. Peng
  • , P. Chang
  • , I. Adachi
  • , H. Aihara
  • , T. Aushev
  • , T. Aziz
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , K. Belous
  • , V. Bhardwaj
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • , M. C. Chang
  • , Y. Chao
  • , A. Chen
  • , K. F. Chen
  • , P. Chen
  • B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, Y. Choi, J. Dalseno, M. Danilov, A. Das, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. H. Lee, J. Li, A. Limosani, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, 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, P. Smerkol, A. Sokolov, M. Starič, K. Sumisawa, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, O. Zyukova
  • National Taiwan University
  • High Energy Accelerator Research Organization (KEK)
  • University of Tokyo
  • Institute for Theoretical and Experimental Physics
  • ENAC-IIC-GEL
  • Tata Institute of Fundamental Research, Mumbai
  • University of Sydney
  • University of Melbourne
  • Kurchatov Institute
  • Panjab University
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Novosibirsk State University
  • Institute for Nuclear Physics
  • Department of Biochemistry and Molecular and Structural Biology
  • University of Maribor
  • University of Hawaii
  • Fu Jen Catholic University
  • National Central University
  • Hanyang University
  • Yonsei University
  • Sungkyunkwan University
  • Max-Planck-Institut für Physik
  • Technische Universität München
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • Institut für Hochenergiephysik
  • University of Ljubljana
  • Korea University
  • Nara Women's University
  • Tohoku University
  • Tohoku Gakuin University
  • Kyungpook National University
  • Nagoya University
  • Niigata University
  • Korea Institute of Science and Technology Information
  • Seoul National University
  • The Graduate University for Advanced Studies
  • Charles University
  • Institute of Meteorology and Climate Research
  • University of Science and Technology of China
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Tokyo Metropolitan University
  • Osaka City University
  • National United University
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Nippon Dental University

Research output: Contribution to journalArticlepeer-review

Abstract

We have searched for Bs0→hh decays, where h stands for a charged or neutral kaon, or a charged pion. These results are based on a 23.6fb-1 data sample collected with the Belle detector on the Υ(5S) resonance at the KEKB asymmetric-energy e+e- collider, containing 1.25×106 Bs(*)B̄s(*) events. We observe the decay Bs0→K +K- and measure its branching fraction, B(Bs0→K +K-)=[3.8-0.9+1.0(stat)±0.5(syst)±0.5(f s)]×10-5. The first error is statistical, the second is systematic, and the third error is due to the uncertainty in the Bs0 production fraction in e+e-→bb̄ events. No significant signals are seen in other decay modes, and we set upper limits at the 90% confidence level: B(Bs0→K-π+)<1.2×10-5, B(Bs0→π+π-)<2.6×10-5, and B(Bs0→K0K̄0) <6.6×10-5.

Original languageEnglish
Article number072007
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number7
DOIs
Publication statusPublished - 15 Oct 2010
Externally publishedYes

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