Garrido Beltrán, LluísGascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente JoséLHCb Collaboration2018-01-242018-01-242016-07-211434-6044https://hdl.handle.net/2445/119268The oscillation frequency, Delta m(d), of B-0 mesons is measured using semileptonic decays with a D- or D*(-) meson in the final state. The data sample corresponds to 3.0 fb(-1) of pp collisions, collected by the LHCb experiment at centre-of-mass energies root s = 7 and 8 TeV. A combination of the two decay modes gives Delta m(d) = (505.0 +/- 2.1 +/- 1.0) ns(-1), where the first uncertainty is statistical and the second is systematic. This is the most precise single measurement of this parameter. It is consistent with the current world average and has similar precision.14 p.application/pdfengcc-by (c) LHCb collaboration et al., 2016http://creativecommons.org/licenses/by/3.0/esMesons (Física nuclear)Oscil·lacionsMesons (Nuclear physics)Oscillationsinfo:eu-repo/semantics/article6692182018-01-24info:eu-repo/semantics/openAccess28286415