par Khachatryan, Vardan;Caillol, Cécile
;Clerbaux, Barbara
;De Lentdecker, Gilles
;Dobur, Didar
;Favart, Laurent
;Gay, Arnaud
;Grebenyuk, Anastasia
;Leonard, Alexandre
;Mohammadi, Abdollah
;Pernie, Luca
;Reis, Thomas
;Seva, Tomislav
;Thomas, Laurent
;Vander Velde, Catherine
;Vanlaer, Pascal
;Wang, Jian
; [et al.]
Référence Physics letters. Section B, 740, page (250-272)
Publication Publié, 2015-01
















Référence Physics letters. Section B, 740, page (250-272)
Publication Publié, 2015-01
Article révisé par les pairs
Résumé : | A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at s=8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6 fb -1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ→ℓℓℓ 'ℓ ', where ℓ = e, μ and ℓ ' = e, μ, τ. The measured total cross section σ(pp→ZZ)=7.7±0.5 (stat)-0.4+0.5 (syst)±0.4(theo)±0.2 (lumi) pb, for both Z bosons produced in the mass range 60 < mZ < 120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZγ couplings at the 95% confidence level: -0.004 |