Memo on Extracting |V(cb)| and |V(ub)/V(cb)| from semileptonic B decays

Details Memo on Extracting |V(cb)| and |V(ub)/V(cb)| from semileptonic B decays Memo on Extracting |V(cb)| and |V(ub)/V(cb)| from semileptonic B decays

1999-07-07

arxiv.org/abs/hep-ph/9907270v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contributed to the Informal Workshop on the Derivation of |V(cb)| and |V(ub)|, CERN, May 28 - June 2, 1999, 19 pages, LATEX

Scientific paper

Heavy Quark Expansions for semileptonic decays of beauty hadrons are briefly reviewed. I analyze how $|V(cb)|$ can be extracted from the semileptonic width of $B$ mesons, the average semileptonic width of all weakly decaying beauty hadrons and from $B \ra l \nu D^*$ at zero recoil. Special attention is paid to present theoretical uncertainties (including correlations among them) and on how to reduce them in the future. Finally I will comment on theoretical uncertainties in $|V(ub)/V(cb)|$.

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