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Improved measurements of the branching fractions for B√Kπ, ππ, and KK decays

  • Y. Chao
  • , K. Suzuki
  • , Y. Unno
  • , K. Abe
  • , K. Abe
  • , T. Abe
  • , I. Adachi
  • , H. Aihara
  • , M. Akatsu
  • , Y. Asano
  • , T. Aso
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , S. Banerjee
  • , I. Bizjak
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • P. Chang, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, J. Haba, T. Hara, M. Hazumi, I. Higuchi, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S. W. Lin, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa

Research output: Contribution to journalArticlepeer-review

Abstract

We report improved measurements of branching fractions for B→Kπ, π+π-, π+π0, and KK̄ decays based on a data sample of 85.0 million BB̄ pairs collected at the Y(45) resonance with the Belle detector at the KEKB e+e- storage ring. This data sample is almost three times larger than the sample previously used. We observe clear signals for B→Kπ, π+ π- and π+π0 decays and set upper limits on B→KK̄ decays. The results can be used to give model-dependent constraints on the CKM angle φ3, as well as limits on the hadronic uncertainty in the time-dependent analysis of the angle φ2.

Original languageEnglish (US)
Article number111102
JournalPhysical Review D
Volume69
Issue number11
DOIs
StatePublished - 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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