Measurement of CP observables in B ^± → DK ^± and B ^± → Dπ ^± with D → KS0^K±π∓ decays

Measurements of CP observables in B^± → DK^± and B^± → Dπ^± decays are presented, where D represents a superposition of D⁰ and D¯ states. The D meson is reconstructed in the three-body final states KS0K±π∓ and KS0K∓π±. The analysis uses samples of B mesons produced in proton-proton collisions, corresponding to an integrated luminosity of 1.0, 2.0, and 6.0 fb⁻¹ collected with the LHCb detector at centre-of-mass energies of s = 7, 8, and 13 TeV, respectively. These measurements are the most precise to date, and provide important input for the determination of the CKM angle γ. [Figure not available: see fulltext.]