A precise measurement of the B-0 meson oscillation frequency

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Title:	A precise measurement of the B-0 meson oscillation frequency
Author:	Garrido Beltrán, Lluís; Gascón Fora, David; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Marín Benito, Carla; Picatoste Olloqui, Eduardo; Rives Molina, Vicente José; LHCb Collaboration
Other authors:	Universitat de Barcelona
Abstract:	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.
Subject(s):	-Mesons (Física nuclear) -Oscil·lacions -Mesons (Nuclear physics) -Oscillations
Rights:	cc-by (c) LHCb collaboration et al., 2016 http://creativecommons.org/licenses/by/3.0/es
Document type:	Article Article - Published version
Published by:	Società Italiana di Fisica & Springer Verlag
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