Measurement of the CKM angle γ in B± → DK± and B± → Dπ± decays with D → $$ {K}_{\mathrm{S}}^0 $$h+h−статья
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Дата последнего поиска статьи во внешних источниках: 4 июня 2021 г.
Аннотация:A measurement of CP-violating observables is performed using the decays B±→DK± and B±→Dπ±, where the D meson is reconstructed in one of the self-conjugate three-body final states KSπ+π− and KSK+K− (commonly denoted KSh+h−). The decays are analysed in bins of the D-decay phase space, leading to a measurement that is independent of the modelling of the D-decay amplitude. The observables are interpreted in terms of the CKM angle γ. Using a data sample corresponding to an integrated luminosity of 9fb−1 collected in proton-proton collisions at centre-of-mass energies of 7, 8, and 13TeV with the LHCb experiment, γ is measured to be (68.7+5.2−5.1)∘. The hadronic parameters rDKB, rDπB, δDKB, and δDπB, which are the ratios and strong-phase differences of the suppressed and favoured B± decays, are also reported.