EPJ Web of Conferences
Volume 49, 2013HCP 2012 – Hadron Collider Physics Symposium 2012
|Number of page(s)||5|
|Published online||20 May 2013|
CP Violation in B Mixing and Decays
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Recent LHCb results on CP violation in B mixing and decays are reported. The analyses are based on 1 fb−1 of pp collisions at √s = 7 TeV recorded in 2011. First evidence is presented for CP violation in B± decays to the K±K+K−, π±K+K−, and π±π+π− final states. The CP violating flavour specific asymmetry, asls, is measured to be (−0.24 ± 0.54stat ± 0.33syst) × 10−2, in good agreement with Standard Model expectations. A flavour tagged and time dependent analysis of the decays, Bs → J/ψϕ and Bs → J/ψπ+π−, measures ϕs = −0.002 ± 0.083stat ± 0.027syst rad, in good agreement with Standard Model predictions.
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