Measurement of γ from B → DK decays at LHCb
Technische Universität Dortmund, Experimentelle Physik V, 44227, Dortmund, Germany
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We report results from the first measurements of the CKM angle γ using B → DK decays with the LHCb experiment. Three well established methods are used to extract the CP observables. The updated measurement of γ in the three-body D0 Dalitz space results in γ = (57±16)°. When combining the observables from all B → DK studies, the best fit value for γ ∈ [0, 180]° is γ = 67.2° with γ ∈ [55.1, 79.1]° at 68%CL and γ ∈ [43.9, 89.5]° at 95%CL. This represents the most precise values directly measured by a single experiment. Furthermore, a new time-dependent approach using Bs0 → Ds±K± decays is used for the first time to measure CP observables and future prospects for γ at LHCb are given.
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