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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185488
Measurement of CP observables in B± → D(*)K± and B± → D(*) π ± decays using two-body D final states
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Measurements of CP observables in B± → D(∗)K± and B± → D(∗)π ± decays are presented, where D(∗) indicates a neutral D or D∗ meson that is an admixture of meson and anti-meson states. Decays of the D(∗) meson to the Dπ0 and Dγ final states are partially reconstructed without inclusion of the neutral pion or photon. Decays of the D meson are reconstructed in the K±π ∓, K+K−, and π +π − final states. The analysis uses a sample of charged B mesons produced in proton-proton collisions and collected with the LHCb experiment, corresponding to integrated luminosities of 2.0, 1.0, and 5.7 fb−1 taken at centre-of-mass energies of 7, 8, and 13 TeV, respectively. The measurements of partially reconstructed B± → D(∗)K± and B± → D(∗)π ± with D → K∓π ± decays are the first of their kind, and a first observation of the B± → (Dπ0 )D∗ π ± decay is made with a significance of 6.1 standard deviations. All CP observables are measured with world-best precision, and in combination with other LHCb results will provide strong constraints on the CKM angle γ
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ALFONSO ALBERO, Alejandro, GARCÍA MORENO, Paula, GARRIDO BELTRÁN, Lluís, GIRONELLA GIRONELL, P., GOMEZ FERNANDEZ, S., GRAUGÉS POUS, Eugeni, LOBO SALVIA, A., MAURICIO, J., VAZQUEZ GOMEZ, R., MARIN BENITO, Carla, LHCb Collaboration. Measurement of CP observables in B± → D(*)K± and B± → D(*) π ± decays using two-body D final states. _Journal of High Energy Physics_. 2021. Vol. 2021, núm. 1-36. [consulta: 23 de gener de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/185488]