QCD FACTORIZATION IN HADRONIC B  J/ ( ,K) DECAYS*

Document Type: Regular Paper

Authors

Physics Department, Semnan University, Semnan, I. R. of Iran

Abstract

Using QCD factorization for the hadronic matrix elements, we show that existing data, in
particular the branching ratios BR ( B →J/ψK) and BR ( B →J/ψπ), can be accounted for in this approach.
We analyze the decay B J /K( ) within the framework of QCD factorization. The calculation of the
relevant hard-scattering kernels for twist-2 and twist-3 is completed. We calculate this decay in a special scale
(  mb ) and in two schemes for Wilson coefficients in NLO. We consider three functions for J / . The
twist-3 contribution involves the logarithmically divergent integral, we consider  H  0 the canceling
divergent. The obtained results are in agreement with available experimental data.

Keywords