Per accedir als documents amb el text complet, si us plau, seguiu el següent enllaç: http://hdl.handle.net/2445/56443

Títol:	Differential branching fraction and angular analysis of the decay B 0 → K ∗0 μ + μ -
Autor/a:	LHCb Collaboration; Abellan Beteta, Carlos; Calvo Gómez, M.; Camboni, Alessandro; Comerma Montells, Albert; Garrido Beltrán, Lluís; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Lopez Asamar, E.; Oyanguren, A.; Pérez-Calero Yzquierdo, Antonio; Picatoste Olloqui, Eduardo; Potterat, Cédric; Rives Molina, Vicente José; Ruiz, Hugo (Ruiz Pérez); Ruiz Valls, P.; Vázquez Gómez, R.; Vilasis-Cardona, X.
Altres autors:	Universitat de Barcelona
Abstract:	The angular distribution and differential branching fraction of the decay B 0→ K ∗0 μ + μ − are studied using a data sample, collected by the LHCb experiment in pp collisions at s√=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1. Several angular observables are measured in bins of the dimuon invariant mass squared, q 2. A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q20=4.9±0.9GeV2/c4 , where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions.
Matèries:	Detectors de radiació Cromodinàmica quàntica Hadrons Nuclear counters Quantum chromodynamics Hadrons
Drets:	cc by, (c) LHCb Collaboration, 2013 http://creativecommons.org/licenses/by/3.0/
Tipus de document:	Article info:eu-repo/semantics/publishedVersion
Publicat per:	Springer Verlag
Compartir:

Mostra el registre complet del document