When new CP-violating interactions are dominated by flavor changing neutral particle exchanges,which may occur in many extensions of the standard model,we examine a type-3 two-Higgs-doublet model and find that direct CP asymmetries can be as large as about 25%.Time-dependent and time-integrated mixing-induced CP asymmetries up to 85 and 40%,respectively,are possible without conflict with other constraints.It mainly requirs an enhanced chromo-magnetic dipole b→sg decay to be close to the present experimental bound.
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