Universitat de Barcelona
The 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.
Anglès
Mesons (Física nuclear); Oscil·lacions; Mesons (Nuclear physics); Oscillations
Società Italiana di Fisica & Springer Verlag
Reproducció del document publicat a: https://doi.org/10.1140/epjc/s10052-016-4250-2
European Physical Journal C, 2016, vol. 76, num. 412
https://doi.org/10.1140/epjc/s10052-016-4250-2
cc-by (c) LHCb collaboration et al., 2016
http://creativecommons.org/licenses/by/3.0/es
