Measurement of phi3 with Dalitz Plot Analysis of B->D(*)K Decay at Belle
Abstract
We present a measurement of the unitarity triangle angle phi3 using a Dalitz plot analysis of the three-body decay of the neutral D meson from the B->D(*)K process. Using a 253 fb-1 data sample collected by the Belle experiment, we obtain 276 signal candidates for B->DK and 69 candidates for B->D*K, where the neutral D meson decays into KSpi+pi-. From a combined maximum likelihood fit to the B->DK and B->D*K modes, we obtain phi3=68+14-15(stat)+-13(syst)+-11(model). The corresponding two standard deviation interval is 22<phi3<113.
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