A Fresh Look at the B Semileptonic Branching Ratio and Beauty Lifetimes
نویسنده
چکیده
We discuss two problems in the theory of heavy-quark decays: an understanding of the semileptonic branching ratio of B mesons, and of the lifetime ratio τ(Λb)/τ(B 0). We also present a model-independent study of spectator contributions to the lifetimes of beauty hadrons. To appear in the Proceedings of Les Rencontres de Physique de la Vallée d’Aoste “Results and Perspectives in Particle Physics” La Thuile, Aosta Valley, Italy, March 1996 CERN-TH/96-120 May 1996
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