Semileptonic B Meson Decays and Interfering Amplitudes
Abstract
Consequences of the interference between external and internal spectator amplitudes for the lifetimes and semileptonic decay fractions of B0 and B+ mesons are discussed. Extrapolating from the constructive interference observed in 11 exclusive hadronic B decays we find an inclusive semileptonic decay fraction of (11.2 0.5 1.7)\%, significantly closer to the experimental results than previous predictions.
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