Measurement of phi₃ with Dalitz Plot Analysis of B->D(*)K Decay at Belle

2004/11/14 by K. Abe, Belle Collaboration, Abe, K.
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Medical Imaging Techniques and Applications #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0411049

17 pages, 10 figures, contributed to FPCP2004. Fig. 5 and 6 corrected, mentioned ambiguity of the result

openalex publication_date 2004/11/14 · arxiv created 2004/12/08 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

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 K_Spi+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

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