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Measurements of B decays to two kaons

  • K. Abe
  • , I. Adachi
  • , H. Aihara
  • , Y. Asano
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , S. Banerjee
  • , E. Barberio
  • , M. Barbero
  • , A. Bay
  • , I. Bedny
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , J. Brodzicka
  • T. E. Browder, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, Y. Enari, S. Fratina, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Goriek, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, J. H. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Kriaan, P. Krokovny, C. C. Kuo, A. Kuzmin, Y. J. Kwon, S. E. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk
  • High Energy Accelerator Research Organization (KEK)
  • University of Tokyo
  • University of Tsukuba
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Institute for Theoretical and Experimental Physics
  • University of Sydney
  • Tata Institute of Fundamental Research, Mumbai
  • University of Melbourne
  • University of Hawaii
  • ENAC-IIC-GEL
  • Department of Biochemistry and Molecular and Structural Biology
  • National Central University
  • Institute for Nuclear Physics
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • National Taiwan University
  • Tohoku Gakuin University
  • Chonnam National University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Princeton University
  • Virginia Polytechnic Institute and State University
  • Institut für Hochenergiephysik
  • University of Cincinnati
  • Nagoya University
  • University of Ljubljana
  • Osaka University
  • Nara Women's University
  • Tokyo Institute of Technology
  • Yonsei University
  • Korea University
  • Chiba University
  • Niigata University
  • Seoul National University
  • University of Maribor
  • Tokyo Metropolitan University

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We report measurements of B meson decays to two kaons using 253fb-1 of data collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. We find evidence for signals in B+→K̄0K+ and B0→K0K̄0 with significances of 3.0σ and 3.5σ, respectively. (Charge-conjugate modes are included.) The corresponding branching fractions are measured to be B(B+→K̄0K+)=(1.0±0.4±0.1)×10-6 and B(B0→K0K̄0)=(0.8±0.3±0.1)×10-6. These decay modes are examples of hadronic b→d transitions. No signal is observed in the decay B0→K+K-, and we set an upper limit of 3.7×10-7 at 90% confidence level.

Original languageEnglish
Article number231802
JournalPhysical Review Letters
Volume95
Issue number23
DOIs
Publication statusPublished - 2 Dec 2005
Externally publishedYes

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