QCD Factorization For B Decays To Two Light Pseudoscalars Including Chirally Enhanced Corrections

Details QCD Factorization For B Decays To Two Light Pseudoscalars Including Chirally Enhanced Corrections QCD Factorization For B Decays To Two Light Pseudoscalars Including Chirally Enhanced Corrections

2000-08-21

arxiv.org/abs/hep-ph/0008216v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

A revised version

Scientific paper

Since b quark mass is not asymptotically large, chirally enhanced corrections which arise from twist-3 wave functions may be important in B decays. We thus evaluate the hadronic matrix elements with the emitted meson described by leading twist and twist-3 distribution amplitudes $\Phi_p(x)$. After summing over the four "vertex correction" diagrams, we obtain the results with infrared finiteness which shows that chirally enhanced corrections arise from $\Phi_p(x)$ can be consistently included in QCD factorization. We also briefly discuss the contributions from "hard spectator" diagrams.

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