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

The CMS Collaboration

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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=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)=6.24-0.80 +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<f4 Z<0.012,-0.012<f5 Z<0.012,-0.013<f4 γ}<0.015, and -0.014<f5 γ<0.014.[Figure not available: see fulltext.]

Original languageEnglish (US)
Article number63
JournalJournal of High Energy Physics
Volume2013
Issue number1
DOIs
StatePublished - 2013

Bibliographical note

Funding Information:
This research was supported by grants from the National Science Foundation (PCM 78-15835 to J.P.T. and a graduate fellowship to R.S.), the Science Research Council, U.K. (to R.J.C.) and the University of California Research Committee. We wish to thank Mrs. I. Durrant and Mr. J. McMurray for technical help, Dr. Mary Ann Markwell for generous gifts of protein markers and Dr. John P. Markwell for advice during the course of this work. Deriphat 160 was a gift from Henkel Corporation, Chicago, IL.

Keywords

  • Hadron-Hadron Scattering

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