Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/186392
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
We report a study of the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − decays, where the neutral D meson is detected through its decays to the K∓π ± and CP-even K+K− and π +π − final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1 . We observe the first significant signals in the CP-even final states of the D meson for both the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − modes, as well as in the doubly Cabibbo-suppressed D → K+π − final state of the B− → Dπ−π +π − decay. Evidence for the ADS suppressed decay B− → DK−π +π −, with D → K+π −, is also presented. From the observed yields in the B− → DK−π +π −, B− → Dπ−π +π − and their charge conjugate decay modes, the most probably value of the weak phase γ corresponds to γ = (74+20 −19) o . This is one of the most precise single-measurement determinations of γ to date.
Matèries (anglès)
Citació
Citació
BADALOV, Alexey, CASANOVA MOHR, R., GARRIDO BELTRÁN, Lluís, GASCÓN FORA, David, GRACIANI DIAZ, Ricardo, GRAUGÉS POUS, Eugeni, MARIN BENITO, Carla, PICATOSTE OLLOQUI, Eduardo, RIVES MOLINA, Vicente josé, RUIZ, Hugo (ruiz pérez), LHCb collaboration. Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ. _Physical Review D_. 2015. Vol. 92, núm. 112005, pàgs. 1-34. [consulta: 24 de gener de 2026]. ISSN: 2470-0010. [Disponible a: https://hdl.handle.net/2445/186392]