Abstract
The 818 fb^-1 dataset collected at the ψ(3770) resonance in the CLEO-c detector offers unique possibilities for measuring strong-phase differences in neutral D decays. We report results for D decays to K_S pi+ pi- and K_S K+ K-. The measurements require that both D mesons in the event are fully reconstructed, with one decaying to the signal mode of interest, and the other to a CP-eigenstate, or a flavour-specific state, or K_{S,L} h+ h- (h = pi or K). The strong-phase differences extracted from these decays are important inputs to the determination of the CKM angle gamma with B->D(K_S h+ h-)K decays.
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