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Title: Differential branching fraction and angular analysis of the decay B 0 → K ∗0 μ + μ -
Author: 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.
Keywords: Detectors de radiació
Cromodinàmica quàntica
Nuclear counters
Quantum chromodynamics
Issue Date: Aug-2013
Publisher: Springer Verlag
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.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2013, vol. 8, num. 131, p. 1-31
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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