A measurement is presented of the ZZ production cross section in the ZZ â 2â2ââ² decay mode with â = e, μ and ââ² = e, μ, Ï in proton-proton collisions at âs=7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 fb-1. The measured cross section Ï(ppâZZ)=6.24-0.80+0.86stat. -0.32+0.41(syst)± 0.14(lumi)pb is consistent with the standard model predictions. The following limits on ZZZ and ZZγ anomalous trilinear gauge couplings are set at 95% confidence level: -0.011<f4Z<0.012,-0.012<f5Z<0.012,-0.013<f4γ<0.015, and -0.014<f5γ<0.014.[Figure not available: see fulltext.] © 2013 CERN for the benefit of the CMS collaboration.
Measurement of the ZZ production cross section and search for anomalous couplings in 2â2ââ² final states in pp collisions at s=7 TeV
ALBERGO, Sebastiano Francesco;CAPPELLO, GIGI;CHIORBOLI, MASSIMILIANO;COSTA, Salvatore;POTENZA, Renato Carlo;TRICOMI, Alessia Rita;TUVE', Cristina Natalina;
2013-01-01
Abstract
A measurement is presented of the ZZ production cross section in the ZZ â 2â2ââ² decay mode with â = e, μ and ââ² = e, μ, Ï in proton-proton collisions at âs=7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 fb-1. The measured cross section Ï(ppâZZ)=6.24-0.80+0.86stat. -0.32+0.41(syst)± 0.14(lumi)pb is consistent with the standard model predictions. The following limits on ZZZ and ZZγ anomalous trilinear gauge couplings are set at 95% confidence level: -0.011I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.