Does the enhancement mechanism work in non-leptonic decays of heavy pseudoscalar mesons with new flavors (b and t)?

Abstract

We show that the enhancement mechanism proposed for non-leptonic decays of charmed mesons (D 0, F +) is still important for decays of pseudoscalar mesons with b flavor, while its effect is small for mesons with t flavor. For the semi-leptonic branching ratios of B − (b u ), B 0(b d ) and B S 0(b s ) we predict BR (B − → evX ∼' 9%, BR(B 0 → evX) ∼' BR(B s 0 → evX) ∼' 5%. We can also derive the enhancement of the branching ratios of uncharmed final states in B decays, i.e. BR( B − → X s u ) ∼' 20 %, BR( B 0 → X s d ) ≈ 10%, where X s u ( s d ) = K π + ... + K K K + ... .