Feasibility of Extracting W~ from Radiative B(Bs) Decays

We use experimental information on D– d K*”p– and B ~ + + K“, coupled with flavor independence of QCD, and with vector meson dominance to show that long distance contributions to B + p+ T, especially to B– ~ p– + ~, are potentially very serious. Estimates based on the annihilation graph are shown to lead to similar conclusions. different in B~ p+ T and We emph=ize that long-distance (LD) contributions can be appreciably B“ + p“ (w) + y. All radiative decays of B, B~ are shown to be governed essentially by two LD and two short-dist ante (SD) hadronic entities. Despite the presence of considerable LD contributions, we show how separate measurements of Ba p+ T, B“ ~ p“ (w) + ~, along with B ~ K* + T, can be used for a systematic extraction of Vtd. Measurements of BS ~ @ + T and K*” + T could also provide very useful consistency checb.