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CP violation in B --> phi K_S decay at large tan(beta)

Seungwon Baek
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Abstract

We consider the chargino contribution to the CP violation in B \to ϕK_S decay in the minimal supersymmetric standard model at large \tanβ. 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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Seungwon Baek. 2003-12-08. CP violation in B --> phi K_S decay at large tan(beta). https://arxiv.org/abs/hep-ph/0312101

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