Measurement of the CKM angle γ from a combination of B^±→Dh^± analyses

A combination of three LHCb measurements of the CKM angle γ is presented. The decays B^±→DK^± and B^±→Dπ^± are used, where D denotes an admixture of D⁰ and D-0 mesons, decaying into K⁺K^-, π⁺π^-, K^±π^∓, K^±π^∓π^±π^∓, KS0π+π-, or KS0K+K- final states. All measurements use a dataset corresponding to 1.0 fb^-1 of integrated luminosity. Combining results from B^±→DK^± decays alone a best-fit value of γ=72.0° is found, and confidence intervals are setγ∈[56.4,86.7]°at 68% CL,γ∈[42.6,99.6]°at 95% CL. The best-fit value of γ found from a combination of results from B^±→Dπ^± decays alone, is γ=18.9°, and the confidence intervalsγ∈[7.4,99.2]°∪[167.9,176.4]°at 68% CL are set, without constraint at 95% CL. The combination of results from B^±→DK^± and B^±→Dπ^± decays gives a best-fit value of γ=72.6° and the confidence intervalsγ∈[55.4,82.3]°at 68% CL,γ∈[40.2,92.7]°at 95% CL are set. All values are expressed modulo 180°, and are obtained taking into account the effect of D⁰-D-0 mixing.