Non-Spectator Contributions to Inclusive Charmless $B$ Decays

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 non-spectator contributions to inclusive charmless $B$ decays due to the spectator effects. We find that the non-spectator contributions to the branching ratio for ${\bar{B}}^0$ are small ($<2\times 10^{-4}$), but the contributions to $\Delta S=0$ and $\Delta S=-1$, $B^{-}$ decay branching ratios can be as large as $-7.5\times 10^{-4}$ and $2\times 10^{-3}$, respectively. These contributions may play an important role in rare charmless $B$ decays.

11 pages, Revtex

References in corpus (2)

• Determination of the Weak Phase gamma from Rate Measurements in B^+- -> pi K, pi pi Decays
• Prospects for Direct CP Violaton in Exclusive and Inclusive Charmless B decays

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• The lifetime of B_c-meson and some relevant problems
• Reanalysis of the Four-Quark Operators Relevant to Λ_b Lifetime from QCD Sum Rule
• |Delta B|=1 Weak Effective Lagrangian in the Minimal Flavor Violation Supersymmetry