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

Dongsheng Du·Deshan Yang·Guohuai Zhu
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Abstract

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 $Φ_p(x)$. After summing over the four "vertex correction" diagrams, we obtain the results with infrared finiteness which shows that chirally enhanced corrections arise from $Φ_p(x)$ can be consistently included in QCD factorization. We also briefly discuss the contributions from "hard spectator" diagrams.

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Dongsheng Du, Deshan Yang, Guohuai Zhu. 2000-12-22. QCD Factorization For B Decays To Two Light Pseudoscalars Including Chirally Enhanced Corrections. https://arxiv.org/abs/hep-ph/0008216

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