Measurement of phi_3 with Dalitz plot analysis of B+ -> D(*)K(*)+ decay

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dc.creatorThe Belle Collaboration
dc.creatorPoluektov, A.
dc.date2006-04-28
dc.date.accessioned2026-07-07T11:58:13Z
dc.date.available2026-07-07T11:58:13Z
dc.descriptionWe present a measurement of the unitarity triangle angle phi_3 using a Dalitz plot analysis of the K0_S pi+ pi- decay of the neutral D meson from the B+- -> D(*)K(*)+- process. The method employs the interference between D0 and D0bar to extract the angle phi_3, strong phase Delta and the ratio r of suppressed and allowed amplitudes. We apply this method to a 357 fb-1 data sample collected by the Belle experiment. The analysis uses three modes: B+ -> DK+, B+ -> D*K+ with D* -> Dpi0, and B+ -> DK*+ with K*+ -> K0_S pi+, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi_3=53+15-18(stat)+-3(syst)+-9(model) degrees. The corresponding two standard deviation interval is 8<phi_3<111 degrees.
dc.description18 pages, 6 figures, 7 tables. To be submitted to Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ex/0604054
dc.identifierhttp://arxiv.org/abs/hep-ex/0604054
dc.identifierPhys.Rev.D73:112009,2006
dc.identifierdoi:10.1103/PhysRevD.73.112009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206153
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of phi_3 with Dalitz plot analysis of B+ -> D(*)K(*)+ decay
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