文摘
Measurements of CP observables in B±→DK±den">de"> and B±→Dπ±den">de"> decays are presented where the D meson is reconstructed in the final states dece8fefdd86e8053a" title="Click to view the MathML source">K±π∓den">de">, π±K∓den">de">, K+K−den">de">, de0c4bcea63b4411c02c1b74ce7c2d3" title="Click to view the MathML source">π+π−den">de">, K±π∓π+π−den">de">, π±K∓π+π−den">de"> and π+π−π+π−den">de">. This analysis uses a sample of charged B mesons from pp collisions collected by the LHCb experiment in 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb−1den">de">. Various CP-violating effects are reported and together these measurements provide important input for the determination of the unitarity triangle angle γ. The analysis of the four-pion D decay mode is the first of its kind.