Measurement of the ZZ production cross section and search for anomalous couplings in 2l2l' final states in pp collisions at sqrt(s)=7 TeV

Abstract : A measurement is presented of the ZZ production cross section in the ZZ to 2l 2l' decay mode with l = e, mu and l' = e, mu, tau in proton-proton collisions at sqrt(s) = 7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 inverse femtobarns. The measured cross section sigma(pp to ZZ) = 6.24 [+0.86/-0.80] (stat.) [+0.41/-0.32] (syst.) +/- 0.14 (lumi.) pb is consistent with the standard model predictions. The following limits on ZZZ and ZZ gamma anomalous trilinear gauge couplings are set at 95% confidence level: -0.011 f[4;Z] < 0.012, -0.012 < f[5;Z] < 0.012, -0.013 < f[4;gamma] < 0.015, and -0.014 < f[5,gamma] < 0.014.
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Journal articles
Journal of High Energy Physics, Institute of Physics (IOP), 2013, pp.063. <10.1007/JHEP01(2013)063>


http://hal.in2p3.fr/in2p3-00755791
Contributor : Sylvie Florès <>
Submitted on : Thursday, November 22, 2012 - 7:00:35 AM
Last modification on : Wednesday, June 26, 2013 - 2:00:27 PM

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S. Chatrchyan, M. Besançon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Measurement of the ZZ production cross section and search for anomalous couplings in 2l2l' final states in pp collisions at sqrt(s)=7 TeV. Journal of High Energy Physics, Institute of Physics (IOP), 2013, pp.063. <10.1007/JHEP01(2013)063>. <in2p3-00755791>

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