文摘
Measurements of CP observables in k to view the MathML source">B±→DK± and k to view the MathML source">B±→Dπ± decays are presented where the D meson is reconstructed in the final states k to view the MathML source">K±π∓, si4" class="mathmlsrc">si4.gif&_user=111111111&_pii=S0370269316302751&_rdoc=1&_issn=03702693&md5=27eb6c0a135607307b421748fd787a4b" title="Click to view the MathML source">π±K∓, k to view the MathML source">K+K−, 411c02c1b74ce7c2d3" title="Click to view the MathML source">π+π−, k to view the MathML source">K±π∓π+π−, k to view the MathML source">π±K∓π+π− and k to view the MathML source">π+π−π+π−. 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 k to view the MathML source">3.0 fb−1. 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.