Differential branching fraction and angular analysis of the decay B 0 → K ∗0 μ + μ -

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Abellan Beteta, Carlos
dc.contributor.author	Calvo Gómez, Míriam
dc.contributor.author	Camboni, Alessandro
dc.contributor.author	Comerma Montells, Albert
dc.contributor.author	Garrido Beltrán, Lluís
dc.contributor.author	Graciani Díaz, Ricardo
dc.contributor.author	Graugés Pous, Eugeni
dc.contributor.author	López Asamar, Elias
dc.contributor.author	Oyanguren Campos, Arantza de
dc.contributor.author	Pérez-Calero Yzquierdo, Antonio
dc.contributor.author	Picatoste Olloqui, Eduardo
dc.contributor.author	Potterat, Cédric
dc.contributor.author	Rives Molina, Vicente José
dc.contributor.author	Ruiz, Hugo (Ruiz Pérez)
dc.contributor.author	Ruiz Valls, Pablo
dc.contributor.author	Vázquez Gómez, Ricard
dc.contributor.author	Vilasis-Cardona, Xavier
dc.contributor.author	LHCb Collaboration
dc.date	2014-07-30T07:17:58Z
dc.date	2014-08-31T22:02:21Z
dc.date	2013-08
dc.date	2014-07-30T07:17:59Z
dc.identifier.citation	1126-6708
dc.identifier.citation	629007
dc.identifier.uri	http://hdl.handle.net/2445/56443
dc.format	31 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Springer Verlag
dc.relation	Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP08(2013)131
dc.relation	Journal of High Energy Physics, 2013, vol. 8, num. 131, p. 1-31
dc.relation	http://dx.doi.org/10.1007/JHEP08(2013)131
dc.rights	cc by, (c) LHCb Collaboration, 2013
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by/3.0/
dc.subject	Detectors de radiació
dc.subject	Cromodinàmica quàntica
dc.subject	Hadrons
dc.subject	Nuclear counters
dc.subject	Quantum chromodynamics
dc.subject	Hadrons
dc.title	Differential branching fraction and angular analysis of the decay B 0 → K ∗0 μ + μ -
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.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.

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