Impact of Subleading Corrections on Hadronic B Decays

Abstract

We study the subleading corrections originating from the 3-parton (q\bar q g) Fock states of final-state mesons in B decays. The corrections could give significant contributions to decays involving an ωor η^{(\prime)} in the final states. Our results indicate the similarity of ωK and ωπ^- rates, of order 5\times 10^{-6}, consistent with the recent measurements. We obtain a_2(B\to J/ψK)\approx 0.27+0.05i, in good agreement with data. Without resorting to the unknown singlet annihilation effects, 3-parton Fock state contributions can enhance the branching ratios of Kη' to the level above 50\times 10^{-6}.