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Nonspectator contributions to inclusive charmless B decays

Wu-Sheng Dai1,2, Xiao-Gang He3, Xue-Qian Li1,2, and Gang Zhao1,2

  • 1CCAST (World Laboratory), P.O. Box 8730, Beijing 10080, People’s Republic of China
  • 2Department of Physics, Nankai University, Tianjin, 300071, People’s Republic of China
  • 3Department of Physics, National Taiwan University, Taipei, 10764, Republic of China

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Phys. Rev. D 60, 034005 – Published 22 June, 1999

DOI: https://doi.org/10.1103/PhysRevD.60.034005

Abstract

The light quarks inside B mesons are usually treated as spectators and do not affect the decay rates which are assumed to be purely due to b quark decays. In this paper we calculate the nonspectator contributions to inclusive charmless B decays due to the spectator effects. We find that the nonspectator contributions to the branching ratio for B0 are small (<2×10−4), but the contributions to ΔS=0 and ΔS=−1, B− decay branching ratios can be as large as −7.5×10−4 and 2×10−3, and can modify the main three-body spectator b decay branching ratios by 10% and 20%, respectively. These contributions may play an important role in rare charmless B decays.

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Phys. Rev. D 60, 034005– Published 22 June, 1999
  • Received 21 January 1999

© 1999 American Physical Society

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