158 articles – 1990 Notices  [english version]
 HAL : in2p3-00648261, version 1
 arXiv : 1111.5242
 Code Bibliographique ADS : 2012PhLB..710..278C
 Physics Letters B 710 (2012) 278-283
 An additional study of multi-muon events produced in pp¯ collisions at s=1.96 TeV
 CDF Collaboration(s)
 (04/2012)
 We present one additional study of multi-muon events produced at the Fermilab Tevatron collider and recorded by the CDF II detector. We use a data set acquired with a dedicated dimuon trigger and corresponding to an integrated luminosity of 3.9 fb-1. We investigate the distribution of the azimuthal angle between the two trigger muons in events containing at least four additional muon candidates to test the compatibility of these events with originating from known QCD processes. We find that this distribution is markedly different from what is expected from such QCD processes and this observation strongly disfavors the possibility that multi-muon events result from an underestimate of the rate of misidentified muons in ordinary QCD events.
 équipe(s) de recherche : APC - AHE
 Thème(s) : Physique/Physique des Hautes Energies - ExpériencePlanète et Univers/Astrophysique/Phénomènes cosmiques de haute energiePhysique/Astrophysique/Phénomènes cosmiques de haute energie
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1111.5242
 in2p3-00648261, version 1 http://hal.in2p3.fr/in2p3-00648261 oai:hal.in2p3.fr:in2p3-00648261 Contributeur : Swarna Bassava <> Soumis le : Lundi 5 Décembre 2011, 14:29:51 Dernière modification le : Vendredi 14 Septembre 2012, 01:21:16