Does the enhancement mechanism work in non-leptonic decays of heavy pseudoscalar mesons with new flavors (b and t)? |
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Authors: | Tsunehiro Kobayashi Nobuo Yamazaki |
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Institution: | Institute of Physics, University of Tsukuba, Ibaraki 305, Japan |
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Abstract: | We show that the enhancement mechanism proposed for non-leptonic decays of charmed mesons (D0, 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), B0(b) and BS0(b) we predict BR (B? → evX ~' 9%, BR(B0 → evX) ~' BR(Bs0 → evX) ~' 5%. We can also derive the enhancement of the branching ratios of uncharmed final states in B decays, i.e. ~' 20 %, ≈ 10%, where = π + ... + K + ... . |
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