Theory of the endpoint region of exclusive rare B decays
arXiv:hep-ph/0410377 · doi:10.1142/9789812702227_0168
Abstract
In the ratio of ratios of rates for radiative and semileptonic decays of B and D to K* and rho mesons the non-computable form factors mostly cancel out. The resulting method for the determination of Vub is largely free of hadronic uncertainties, raising the prospect of a precise determination of Vub.
4 pages, 2 figures, talk presented at ICHEP04, Beijing, China, August 2004