decays in QCD factorization
Department of Physics, Peking University, 100871, Beijing, P.R. China
2 China Center of Advanced Science and Technology, (World Laboratory), 100080, Beijing, P.R. China
We study the exclusive decays of the B meson into pseudoscalar charmonium states and within the QCD factorization approach and find that the non-factorizable corrections to naive factorization are infrared safe at leading-twist order. The spectator interactions arising from the kaon twist-3 effects are formally power suppressed but chirally and logarithmically enhanced. An important improvement by including the corrections is the cancellation of the renormalization scale μ dependence of the decay amplitude. However, the calculated decay rates are too small to accommodate the experimental data. On the other hand, we compare the theoretical calculations for B meson decays to and , and find that the predicted relative decay rates of these four states are approximately compatible with the experimental data.
© Springer-Verlag, 2004