Semileptonic B Meson Decays and Interfering Amplitudes
نویسندگان
چکیده
Consequences of the interference between external and internal spectator amplitudes for the lifetimes and semileptonic decay fractions of B 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.
منابع مشابه
The Semileptonic Decay Fraction of B-Mesons in the Light of Interfering Amplitudes
Consequences of the interference between spectator amplitudes for the lifetimes and semileptonic decay fractions of B and B mesons are discussed. Extracting these amplitudes from a fit to 11 exclusive hadronic B decay fractions we find a1 = 1.05 ± 0.03 ± 0.10, a2 = +0.227 ± 0.012 ± 0.022, an inclusive semileptonic decay fraction of (11.2 ± 0.5 ± 1.7)%, and a lifetime ratio τ(B)/τ(B) = 0.83± 0.0...
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تاریخ انتشار 1994