Measurement of phi3 in B->D(*)K Decays at Belle
A. Poluektov
Abstract
We present a measurement of the unitarity triangle angle phi3 using a Dalitz plot analysis of the three-body decay of the D0 meson from the B+- -> D(*)K+- process. The method employs the interference between D0 and D0bar to extract both the weak and strong phases. We apply this method to the 140 fb-1 of data collected by Belle experiment. The analysis uses B+- -> DK+- and B+- -> D*K+- with D*->Dpi0 modes, where the neutral D meson decays into Ks pi+ pi-. From a combined maximum likelihood fit of B+- -> DK+- and B+- -> D*K+- modes, we obtain phi3=81+-19+-13(syst)+-11(model). The 95% confidence interval is 35<phi3<127.
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