https://doi.org/10.1140/epjc/s10052-009-1112-1
Regular Article - Theoretical Physics
Branching ratio and CP violation of B c →DK decays in the perturbative QCD approach
School of Physical Science and Technology, Southwest University, Chongqing, 400715, China
* e-mail: yuxq@swu.edu.cn
Received:
6
May
2009
Revised:
14
June
2009
Published online:
6
August
2009
In this paper, we calculate the branching ratio and direct CP asymmetry parameter of B c ± →D 0 K ± in the framework of a perturbative QCD approach based on k T factorization. Besides the usual factorizable diagrams, both nonfactorizable and annihilation type contributions are taken into account. We find that (a) the branching ratio is at the order of 10−5; (b) the tree annihilation diagrams and the penguin diagrams dominate the total contribution; and (c) the direct CP asymmetry is about 7%, which can be tested in the Large Hadron Collider beauty experiments (LHC-b) at CERN.
PACS: 13.25.Hw – / 12.38.Bx – / 12.39.St –
© Springer-Verlag , 2009
