CP asymmetries and branching ratios of B --> K πin supersymmetric models

Details CP asymmetries and branching ratios of B --> K πin supersymmetric models CP asymmetries and branching ratios of B --> K πin supersymmetric models

2005-05-17

arxiv.org/abs/hep-ph/0505151v1

Phys.Rev. D72 (2005) 035007

Physics

High Energy Physics

High Energy Physics - Phenomenology

36 pages, 3 figures

Scientific paper

10.1103/PhysRevD.72.035007

We analyze the supersymmetric contributions to the direct and mixing CP asymmetries and also to the branching ratios of the B --> K \pi decays in a model independent way. We consider both gluino and chargino exchanges and emphasize that a large gluino contribution is essential for saturating the direct and mixing CP asymmetries. We also find that combined contributions from the penguin diagrams with chargino and gluino in the loop could lead to a possible solution for the branching ratios puzzle and account for the results of R_c and R_n within b --> s \gamma constraints. When all relevant constraints are satisfied, our result indicates that supersymmetry favors lower values of R_c. Finally we study the correlations between the mixing CP asymmetry S_{K^0 \pi^0} and mixing CP asymmetries of the processes B --> \phi K and B --> \eta' K. We show that it is quite possible for gluino exchanges to accommodate the results of that observables

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