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Observation of the decay B̄0→Ds+Λp̄

  • T. Medvedeva
  • , R. Chistov
  • , K. Abe
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , D. Anipko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , A. Bay
  • , K. Belous
  • , U. Bitenc
  • , I. Bizjak
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , J. Brodzicka
  • , T. E. Browder
  • M. C. Chang, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, Y. J. Kim, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, Y. J. Kwon, G. Leder, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, Y. Nagasaka, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, A. Zupanc
  • Institute for Theoretical and Experimental Physics
  • High Energy Accelerator Research Organization (KEK)
  • Tohoku Gakuin University
  • University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • ENAC-IIC-GEL
  • University of Sydney
  • University of Melbourne
  • Kurchatov Institute
  • Department of Biochemistry and Molecular and Structural Biology
  • Institute for Nuclear Physics
  • University of Maribor
  • University of Hawaii
  • Fu Jen Catholic University
  • National Taiwan University
  • National Central University
  • Hanyang University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • Princeton University
  • University of Ljubljana
  • Korea University
  • Nagoya University
  • Nara Women's University
  • Osaka University
  • Yonsei University
  • Chiba University
  • Niigata University
  • Tokyo Institute of Technology
  • The Graduate University for Advanced Studies
  • Panjab University
  • Institut für Hochenergiephysik
  • Seoul National University
  • Tata Institute of Fundamental Research, Mumbai
  • Tokyo Metropolitan University
  • Hiroshima Institute of Technology
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Riken BNL Research Center
  • Kyungpook National University
  • Shinshu University
  • University of Illinois at Urbana-Champaign
  • University of Nova Gorica
  • Osaka City University
  • Tsinghua University
  • National United University
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Tohoku University
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to journalArticlepeer-review

Abstract

We report the first observation of the decay B̄0→Ds+Λ p̄ with a statistical significance of 6.6σ. We measure B(B̄0→Ds+Λp̄)=(2.9±0.7±0.5±0.4) ×10-5, where the first error is statistical, the second is systematic, and the third error comes from the uncertainty in B(Ds+→π+). The data used for this analysis was accumulated at the Υ(4S) resonance, using the Belle detector at the KEKB asymmetric-energy e+e- collider. The integrated luminosity of the data sample is 414fb-1, corresponding to 449×106 BB̄ pairs.

Original languageEnglish
Article number051102
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number5
DOIs
Publication statusPublished - 12 Sept 2007
Externally publishedYes

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