Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-12-08
J.Korean Phys.Soc. 45 (2004) S435-S437
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 2 figures, talk presented at 2nd International Conference on Flavor Physics
Scientific paper
We consider the chargino contribution to the CP violation in B \to \phi K_S decay in the minimal supersymmetric standard model at large \tan\beta. It is shown that the Wilson coefficient C_{8g} of the chromomagnetic penguin operator can be significantly enhanced by the chargino-mediated diagrams while satisfying other direct/indirect experimental constraints. The enhanced C_{8g} allows large deviation in the CP asymmetry from the standard model prediction.
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