Observation of CP violation in B+/- -> D K+/- decays

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doi:10.1016/j.physletb.2012.04.060

An analysis of B+ to DK+ and B+ to Dpi+ decays is presented where the D meson is reconstructed in the two-body final states: K+pi-, K+K-, pi+pi- and pi+K-. Using 1.0 fb-1 of LHCb data, measurements of several observables are made including the first observation of the suppressed mode B+ to DK+ D to pi+K-. CP violation in B+ to DK+ decays is observed with 5.8 sigma significance

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Observation of CP violation in B+/- -> D K+/- decays. PHYSICS LETTERS. SECTION B, 712(3), 203-212 [10.1016/j.physletb.2012.04.060].