cK) decays in QCD factorization
نویسنده
چکیده
We study the exclusive decays of B meson into pseudoscalar charmonium states ηc and η ′ c within the QCD factorization approach and find that the nonfactorizable 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. The theoretical decay rates are too small to accommodate the experimental data. On the other hand, we compare the theoretical calculations for J/ψ,ψ, and ηc, η ′ c, and find that the predicted relative decay rates of these four states are approximately compatible with experimental data. PACS numbers: 13.25.Hw; 12.38.Bx; 14.40.Gx
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