Tipus de document

Article

Versió

Versió publicada

Data de publicació

Llicència de publicació

cc by (c) CERN; LHCb Collaboration, 2014
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/131208

Measurement of CP violation in B0s → ϕϕ decays

Títol de la revista

Director/Tutor

ISSN de la revista

Títol del volum

Resum

A measurement of the decay time-dependent C P -violating asymmetry in B 0 s → ϕ ϕ decays is presented, along with measurements of the T -odd triple-product asymmetries. In this decay channel, the C P -violating weak phase arises from the interference between B 0 s − ¯ B 0 s mixing and the loop-induced decay amplitude. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 3.0     fb − 1 collected with the LHCb detector, a signal yield of approximately 4000 B 0 s → ϕ ϕ decays is obtained. The C P -violating phase is measured to be ϕ s = − 0.17 ± 0.15 ( stat ) ± 0.03 ( syst )     rad . The triple-product asymmetries are measured to be A U = − 0.003 ± 0.017 ( stat ) ± 0.006 ( syst ) and A V = − 0.017 ± 0.017 ( stat ) ± 0.006 ( syst ) . Results are consistent with the hypothesis of C P conservation.

Citació

Citació

BADALOV, Alexey, et al. Measurement of CP violation in B0s → ϕϕ decays. Physical Review D. 2014. Vol. 90, núm. 5, pàgs. 052011. ISSN 1550-7998. [consulta: 8 de maig de 2026]. Disponible a: https://hdl.handle.net/2445/131208

Exportar metadades

JSON - METS

Compartir registre