Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185634
Measurement of the CKM angle gamma using B-+/- -> DK +/- with D -> K-S(0)pi(+)pi(-), (KSK+K-)-K-0 decays
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
A binned Dalitz plot analysis of B± → DK± decays, with D → K0 S π +π − and D → K0 SK+K−, is performed to measure the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis exploits a sample of proton-proton collision data corresponding to 3.0 fb−1 collected by the LHCb experiment. Measurements from CLEO-c of the variation of the strong-interaction phase of the D decay over the Dalitz plot are used as inputs. The values of the parameters are found to be x+ = (−7.7 ± 2.4 ± 1.0 ± 0.4) × 10−2 , x− = (2.5 ± 2.5 ± 1.0 ± 0.5) × 10−2 , y+ = (−2.2 ± 2.5 ± 0.4 ± 1.0) × 10−2 , and y− = (7.5 ± 2.9 ± 0.5 ± 1.4) × 10−2 . The first, second, and third uncertainties are the statistical, the experimental systematic, and that associated with the precision of the strong-phase parameters. These are the most precise measurements of these observables and correspond to γ = (62 +15 −14) ◦ , with a second solution at γ → γ + 180◦ , and rB = 0.080+0.019 −0.021, where rB is the ratio between the suppressed and favoured B decay amplitudes.
Matèries (anglès)
Citació
Citació
GARRIDO BELTRÁN, Lluís, GRACIANI DÍAZ, Ricardo, GRAUGÉS POUS, Eugeni, MARIN BENITO, Carla, PICATOSTE OLLOQUI, Eduardo, RIVES MOLINA, Vicente josé, RUIZ, Hugo (ruiz pérez), LHCb Collaboration. Measurement of the CKM angle gamma using B-+/- -> DK +/- with D -> K-S(0)pi(+)pi(-), (KSK+K-)-K-0 decays. _Journal of High Energy Physics_. 2014. Vol. 10, núm. 097, pàgs. 1-52. [consulta: 21 de gener de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/185634]