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Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four- lepton final states at sqrt(s) = 8 TeV (CROSBI ID 239111)

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Khachatryan, Vardan ; ... ; Morović, Srećko ; Ferenček, Dinko ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko et al. Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four- lepton final states at sqrt(s) = 8 TeV // Physics letters. B, 740 (2015), 250-272. doi: 10.1016/j.physletb.2014.11.059

Podaci o odgovornosti

Khachatryan, Vardan ; ... ; Morović, Srećko ; Ferenček, Dinko ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Sudić, Lucija ; ... ; Woods, Nate

engleski

Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four- lepton final states at sqrt(s) = 8 TeV

A measurement of inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at sqrt(s) = 8 TeV are presented. A data sample, corresponding to an integrated luminosity of 19.6 inverse femtobarns was collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ to lll'l', where l = e, mu and l' = e, mu, tau. The measured total cross section, sigma(pp to ZZ) = 7.7 +/- 0.5 (stat.) +0.5-0.4 (syst.) +/- 0.4 (theo.) +/- 0.2 (lum.) pb for both Z bosons produced in the mass range 60 < m[Z] < 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 ZZ gamma < 0.004, -0.005 < f[4, gamma] < 0.005, and -0.005 < f[5, gamma] < 0.005.

High energy physics, Experimental particle physics, LHC, CMS, Standard Model

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Podaci o izdanju

740

2015.

250-272

objavljeno

0370-2693

10.1016/j.physletb.2014.11.059

Povezanost rada

Fizika

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