Measurement of CP violation in B0→D+D− decays

Abstract : The CP violation observables S and C in the decay channel B0→D+D− are determined from a sample of proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 3 fb−1. The observable S describes CP violation in the interference between mixing and the decay amplitude, and C parametrizes direct CP violation in the decay. The following values are obtained from a flavour-tagged, decay-time-dependent analysis: SC=−0.54+0.17−0.16(stat)±0.05(syst),=0.26+0.18−0.17(stat)±0.02(syst). These values constrain higher-order Standard Model corrections to be small.
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Submitted on : Wednesday, August 24, 2016 - 10:14:19 AM
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.. Measurement of CP violation in B0→D+D− decays. Physical Review Letters, American Physical Society, 2016, 117, pp.261801 ⟨10.1103/PhysRevLett.117.261801⟩. ⟨in2p3-01355729⟩

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