Nonfactorizable Effects in Charmless B Decays and B Meson Lifetimes

Abstract

Status of nonfactorizable effects in hadronic charmless B decays is reviewed. Implications of new CLEO measurements on $B^0\to {\pi }^{+}{\pi }^{-}$ and $B\to {\eta }^{\prime }K$ are discussed. Nonfactorizable effects due to color ocet 4-quark operators are calculated using renormalization group improved QCD sum rules. The resultant B-meson lifetime ratio $\tau (B^{-})/\tau (B_d)$ agrees with experiment.

5 pages, 2 figures, talk presented at the XXIX International Conference on High Energy Physics, Vancouver, July 23-28, 1998