2004/05/18 by A. Poluektov, Poluektov, A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0405048
6 pages, 1 figure, 1 table, Proceedings of Recontres de Moriond 2004 "Electroweak Interactions and Unified Theories"
arxiv created 2004/05/18 · openalex publication_date 2004/05/18 · arxiv updated 2019/08/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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∘.