CP violation in B → φ K S decay at large<…
2003; American Physical Society; Volume: 67; Issue: 9 Linguagem: Inglês
10.1103/physrevd.67.096004
ISSN1538-4500
Autores Tópico(s)Black Holes and Theoretical Physics
ResumoWe 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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