Measurement of the ZZ production cross section and search for anomalous couplings in 2ℓ2ℓ′ final states in pp collisions at √s = 7 TeV
Author(s)
CMS Collaboration; Apyan, Aram; Bauer, Gerry P; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Klute, Markus; Krajczar, Krisztian F.; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E; Roland, Gunther M; Rudolph, Matthew Scott; Stephans, George S. F.; Stoeckli, Fabian; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, Roger; Wyslouch, Boleslaw; Yang, Ming; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Kim, Y.; Chan, M.; ... Show more Show less
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A measurement is presented of the ZZ production cross section in the ZZ -> 2l2l' decay mode with l = e, μ and l' = e, μ, τ in proton-proton collisions at root √s = 7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 fb[superscript -1]. The measured cross section sigma(pp -> ZZ) = 6.24[subscript -080][superscript +0.86](stat.)[subscript -0.32][superscript +0.41](syst.) +/- 0.14 (lumi.) pb is consistent with the standard model predictions. The following limits on ZZZ and ZZ-γ anomalous trilinear gauge couplings are set at 95% confidence level: -0.011 < f[subscript 4][superscript Z] < 0.012, -0.012 < f [subscript 5][superscript Z] < 0.012, -0.013 < f[subscript 4]γ < 0.015, and -0.014 < f[subscript 5]γ < 0.014. Keywords: Hadron-Hadron Scattering
Date issued
2013-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Chatrchyan, S. et al. “Measurement of the ZZ production cross section and search for anomalous couplings in 2ℓ2ℓ′ final states in pp collisions at √s = 7 TeV.” Journal of High Energy Physics 2013, 1 (January 2013): 63 © 2013 CERN for the benefit of the CMS collaboration
Version: Final published version
ISSN
1029-8479