The B-CP Puzzles in QCD Factorization
High Energy Physics - Phenomenology
2011-02-11 v1
Abstract
Within the framework of QCD factorization (QCDF), power corrections due to penguin annihilation can account for theobserved rates of penguin-dominated two-body decays of mesons and direct CP asymmetries , , and . However, the predicted direct CP-violating effects in QCDF for and are wrong in signs when confronted with experiment. We consider two different types of power correction effects in order to resolve the CP puzzles and rate deficit problems with penguin-dominated two-body decays of mesons and color-suppressed tree-dominated and modes: penguin annihilation and soft corrections to the color-suppressed tree amplitude.
Cite
@article{arxiv.1012.5504,
title = {The B-CP Puzzles in QCD Factorization},
author = {Hai-Yang Cheng and Chun-Khiang Chua},
journal= {arXiv preprint arXiv:1012.5504},
year = {2011}
}
Comments
talk presented at the 15th International Conference in QCD, June 28- July 3, 2010, Montpellier, France