Study of Penguin Pollution in the B0 -> J/psi KS Decay
Abstract
We study the penguin pollution in the B0 -> J/psi KS decay up to leading power in 1/mb and to next-to-leading order in αs, mb being the b quark mass and αs the strong coupling constant. The deviation SJ/psi KS of the mixing-induced CP asymmetry from sin(2φ1) and the direct CP asymmetry AJ/psi KS are both found to be of O(10-3) in a formalism that combines the QCD-improved factorization and perturbative QCD approaches.
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