Abellan Beteta, CarlosCalvo Gómez, MíriamCamboni, AlessandroComerma Montells, AlbertDomingo Bonal, FrancescGarrido Beltrán, LluísGascón Fora, DavidGrabalosa Gándara, MarcGraciani Díaz, RicardoGraugés Pous, EugeniLópez Asamar, EliasPérez-Calero Yzquierdo, AntonioPicatoste Olloqui, EduardoPie Valls, B. (Blai)Potterat, CédricPuig Navarro, AlbertRoselló, M.Ruiz, Hugo (Ruiz Pérez)Vázquez Gómez, RicardVilasis-Cardona, XavierLHCb Collaboration2019-05-212019-05-212012-10-090031-9007https://hdl.handle.net/2445/133581The effective lifetime of the ¯¯¯ B 0 s meson in the decay mode ¯¯¯ B 0 s → J / ψ f 0 ( 980 ) is measured using 1.0     fb − 1 of data collected in p p collisions at √ s = 7     TeV with the LHCb detector. The result is 1.700 ± 0.040 ± 0.026     ps , where the first uncertainty is statistical and the second systematic. As the final state is C P -odd, and C P violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy ¯¯¯ B 0 s mass eigenstate, Γ H = 0.588 ± 0.014 ± 0.009     ps − 1 .8 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2012http://creativecommons.org/licenses/by/3.0/es/Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6196262019-05-21info:eu-repo/semantics/openAccess