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Measurement of the ZZ production cross section and search for anomalous couplings in 2ℓ2ℓ′ final states in pp collisions at s√=7 TeV
Baringer, Philip S. Bean, Alice Benelli, Gabriele Kenny, R. P., III Murray, Michael J. Noonan, Danny Sanders, Stephen J. Stringer, Robert W. Tinti, Gemma Wood, Jeffrey Scott
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Kenny, R. P., III
Murray, Michael J.
Noonan, Danny
Sanders, Stephen J.
Stringer, Robert W.
Tinti, Gemma
Wood, Jeffrey Scott
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Abstract
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 s√=7s=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 σ(pp→ZZ)=6.24+0.86−0.80(stat.)+0.41−0.32(syst.)±0.14(lumi.)pbσ(pp→ZZ)=6.24−0.80+0.86(stat.)−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<fZ4<0.012,−0.012<fZ5<0.012,−0.013<fγ4<0.015−0.011<f4Z<0.012,−0.012<f5Z<0.012,−0.013<f4γ<0.015, and −0.014<fγ5<0.014−0.014<f5γ<0.014.
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This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP01%282013%29063.
Date
2013-01-09
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Springer-Verlag
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S. Chatrchyan et al. (The CMS Collaboration). "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, 10(2013):063. http://www.dx.doi.org/10.1007/JHEP01(2013)063.