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

• Main Authors: CMS Collaboration (Author), Apyan, Aram (Contributor), Bauer, Gerry P (Contributor), Bendavid, Joshua L. (Contributor), Busza, Wit (Contributor), Butz, Erik M. (Contributor), Cali, Ivan Amos (Contributor), Chan, Matthew Hans (Contributor), Dutta, Valentina (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Goncharov, Maxim (Contributor), Hahn, Kristian Allan (Contributor), Kim, Yongsun (Contributor), Klute, Markus (Contributor), Krajczar, Krisztian F. (Contributor), Luckey Jr, P David (Contributor), Ma, Teng (Contributor), Nahn, Steven (Contributor), Paus, Christoph M. E. (Contributor), Ralph, Duncan Kelley (Contributor), Roland, Christof E (Contributor), Roland, Gunther M (Contributor), Rudolph, Matthew Scott (Contributor), Stephans, George S. F. (Contributor), Stoeckli, Fabian (Contributor), Sumorok, Konstanty C (Contributor), Sung, Kevin Kai Hong (Contributor), Velicanu, Dragos Alexandru (Contributor), Wenger, Edward Allen (Contributor), Wolf, Roger (Contributor), Wyslouch, Boleslaw (Contributor), Yang, Ming (Contributor), Yilmaz, Yetkin (Contributor), Yoon, A. S. (Contributor), Zanetti, Marco (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: Springer Berlin Heidelberg, 2018-06-05T15:26:28Z.
• Subjects: Article
• Online Access: Get fulltext

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