Alfonso Albero, AlejandroCalvo Gómez, MíriamCamboni, AlessandroCoquereau, SamuelGarrido Beltrán, LluísGascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaLHCb Collaboration2022-05-042022-05-0420181126-6708https://hdl.handle.net/2445/185391Abstract: We report the measurements of the CP-violating parameters in B0 s → D∓ s K± decays observed in pp collisions, using a data set corresponding to an integrated luminosity of 3.0 fb−1 recorded with the LHCb detector. We measure Cf = 0.73 ± 0.14 ± 0.05, A∆Γ f = 0.39 ± 0.28 ± 0.15, A∆Γ f¯ = 0.31 ± 0.28 ± 0.15, Sf = −0.52 ± 0.20 ± 0.07, Sf¯ = −0.49 ± 0.20 ± 0.07, where the uncertainties are statistical and systematic, respectively. These parameters are used together with the world-average value of the B0 s mixing phase, −2βs, to obtain a measurement of the CKM angle γ from B0 s → D∓ s K± decays, yielding γ = (128 +17 −22) ◦ modulo 180◦ , where the uncertainty contains both statistical and systematic contributions. This corresponds to 3.8 σ evidence for CP violation in the interference between decay and decay after mixing28 p.application/pdfengcc-by (c) LHCb Collaboration (UB: Alfonso Albero, A. et al., 2018https://creativecommons.org/licenses/by/4.0/HadronsGran Col·lisionador d'HadronsFísica de partículesExperimentsHadronsLarge Hadron Collider (France and Switzerland)Particle physicsExperimentsinfo:eu-repo/semantics/article6847102022-05-04info:eu-repo/semantics/openAccess