Constraints on the unitarity triangle angle γ from Dalitz plot analysis of B0→DK+π− decays

Abstract : The first study is presented of CP violation with an amplitude analysis of the Dalitz plot of B0→DK+π− decays, with D→K+π−, K+K− and π+π−. The analysis is based on a data sample corresponding to 3.0fb−1 of pp collisions collected with the LHCb detector. No significant CP violation effect is seen, and constraints are placed on the angle γ of the unitarity triangle formed from elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Hadronic parameters associated with the B0→DK∗(892)0 decay are determined for the first time. These measurements can be used to improve the sensitivity to γ of existing and future studies of the B0→DK∗(892)0 decay.
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Submitted on : Thursday, February 11, 2016 - 1:55:58 PM
Last modification on : Monday, June 3, 2019 - 1:38:03 PM

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R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Constraints on the unitarity triangle angle γ from Dalitz plot analysis of B0→DK+π− decays. Physical Review D, American Physical Society, 2016, 93, pp.112018 ⟨10.1103/PhysRevD.93.112018⟩. ⟨in2p3-01272816⟩

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