Constraints on the CKM Angle gamma from B -> K*+- pi-+
Werner M. Sun
Abstract
We present constraints on the CKM parameter gamma=arg(Vub*) formed within the framework of SU(3) symmetry and based on charmless hadronic B decays to K*+- pi-+ and other pseudoscalar-vector final states. For strong phases of O(10 degrees), our analysis weakly favors cos(gamma)<0. We also estimate that a determination of γ with an experimental uncertainty of less than 10 can be attained with an order-of-magnitude improvement in the precision of the experimental inputs, but SU(3) symmetry breaking could introduce corrections approaching the size of the current experimental uncertainties.
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