Nonspectator contributions to inclusive charmless B decays - art. no. 034005

The light quarks inside B mesons are usually treated as spectators and do n ot affect the decay rates which are assumed to be purely due to b quark dec ays. In this paper we calculate the nonspectator contributions to inclusive charmless B decays due to the spectator effects. We find that the nonspect ator contributions to the branching ratio for (B) over bar(0) are small (< 2 X 10(-4)), but the contributions to Delta S = 0 and Delta S = -1, B- deca y branching ratios can be as large as -7.5 X 10(-4) and 2 X 10(-3), and fan modify the main three-body spectator b decay branching ratios by 10% and 2 0%, respectively. These contributions may play an important role in rare ch armless B decays. [S0556-2821(99)03113-6].