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Title: | Measurement of the CKM angle γ from a combination of B±→Dh± analyses |
Author: | LHCb Collaboration Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Oyanguren Campos, Arantza de Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Potterat, Cédric Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Ruiz Valls, Pablo Vázquez Gómez, Ricard Vilasis-Cardona, Xavier |
Keywords: | Física de partícules Experiments Mesons (Física nuclear) Particle physics Experiments Mesons (Nuclear physics) |
Issue Date: | Oct-2013 |
Publisher: | Elsevier B.V. |
Abstract: | A combination of three LHCb measurements of the CKM angle γ is presented. The decays B± → D K ± and B± → Dπ± are used, where D denotes an admixture of D0 and D0 mesons, decaying into K + K −, π+π−, K ±π∓, K ±π∓π±π∓, K0 Sπ+π−, or K0 S K + K − final states. All measurements use a dataset corresponding to 1.0 fb−1 of integrated luminosity. Combining results from B± → D K ± decays alone a best-fit value of γ = 72.0◦ is found, and confidence intervals are set γ ∈ [56.4, 86.7] ◦ at 68% CL, γ ∈ [42.6, 99.6] ◦ at 95% CL. The best-fit value of γ found from a combination of results from B± → Dπ± decays alone, is γ = 18.9◦, and the confidence intervals γ ∈ [7.4, 99.2] ◦ ∪ [167.9, 176.4] ◦ at 68% CL are set, without constraint at 95% CL. The combination of results from B± → D K ± and B± → Dπ± decays gives a best-fit value of γ = 72.6◦ and the confidence intervals γ ∈ [55.4, 82.3] ◦ at 68% CL, γ ∈ [40.2, 92.7] ◦ at 95% CL |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2013.08.020 |
It is part of: | Physics Letters B, 2013, vol. 726, p. 151-163 |
URI: | http://hdl.handle.net/2445/196773 |
Related resource: | https://doi.org/10.1016/j.physletb.2013.08.020 |
ISSN: | 0370-2693 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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