Study of Penguin Pollution in the B^0 -> J/psi K_S Decay
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We study the penguin pollution in the B^0 -> J/psi K_S decay up to leading power in 1/m_b and to next-to-leading order in \alpha_s, m_b being the b quark mass and \alpha_s the strong coupling constant. The deviation \Delta S_{J/psi K_S} of the mixing-induced CP asymmetry from sin(2\phi_1) and the direct CP asymmetry A_{J/psi K_S} are both found to be of O(10^{-3}) in a formalism that combines the QCD-improved factorization and perturbative QCD approaches.
Cite
@article{arxiv.hep-ph/0703193,
title = {Study of Penguin Pollution in the B^0 -> J/psi K_S Decay},
author = {Satoshi Mishima},
journal= {arXiv preprint arXiv:hep-ph/0703193},
year = {2007}
}
Comments
4 pages, 5 figures; talk given at the 4th International Workshop on the CKM Unitarity Triangle (CKM2006), Nagoya, Japan, Dec. 12-16, 2006