CP violation in $B \to φK_S$ decay at large $\tanβ$

Details CP violation in $B \to φK_S$ decay at large $\tanβ$ CP violation in $B \to φK_S$ decay at large $\tanβ$

2003-01-30

arxiv.org/abs/hep-ph/0301269v2

Phys.Rev. D67 (2003) 096004

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures, typos corrected, references added

Scientific paper

10.1103/PhysRevD.67.096004

We consider the chargino contribution to the CP violation in $B \to \phi K_S$ decay in the minimal supersymmetric standard model at large $\tan\be$. 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, especially it can explain the apparent anomaly reported by BaBar and Belle.

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