Measurement of CP violation in B 0 → D ∗± D ∓ decays

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Springer Berlin Heidelberg

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Abstract: The decay-time-dependent CP asymmetry in B0→ D∗±D∓ decays is mea- sured using a data set corresponding to an integrated luminosity of 9 fb−1 recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The CP parameters are measured asSD∗D=−0.861±0.077stat±0.019syst, ΔSD∗D=0.019±0.075stat±0.012syst, CD∗D=−0.059±0.092stat±0.020syst, ΔCD∗D=−0.031±0.092stat±0.016syst, AD∗D=0.008±0.014stat±0.006syst. The analysis provides the most precise single measurement of CP violation in this decay channel to date. All parameters are consistent with their current world average values.

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