B ->η_c K(η_c^\prime K) decays in QCD factorization

Details B ->η_c K(η_c^\prime K) decays in QCD factorization B ->η_c K(η_c^\prime K) decays in QCD factorization

2002-09-23

arxiv.org/abs/hep-ph/0209257v2

Eur.Phys.J.C36:365-370,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTex, 1 figure, one footnote and two references added

Scientific paper

10.1140/epjc/s2004-01945-7

We study the exclusive decays of $B$ meson into pseudoscalar charmonium states $\eta_c$ and $\eta_c^\prime$ 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 $J/\psi, \psi^\prime$, and $\eta_c, \eta_c^\prime$, and find that the predicted relative decay rates of these four states are approximately compatible with experimental data.

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