QCD Factorization For B Decays To Two Light Pseudoscalars Including Chirally Enhanced Corrections
Abstract
Since b quark mass is not asymptotically large, chirally enhanced corrections which arise from twist3 wave functions may be important in B decays. We thus evaluate the hadronic matrix elements with the emitted meson described by leading twist and twist3 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.
 Publication:

arXiv eprints
 Pub Date:
 August 2000
 arXiv:
 arXiv:hepph/0008216
 Bibcode:
 2000hep.ph....8216D
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 A revised version