The production of Z boson pairs in proton–proton (pp) collisions, pp→(Z/∗)(Z/∗)→2ℓ2ℓ′, where ℓ,ℓ′=e or μ, is studied at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137fb−1, collected during 2016–2018. The ZZ production cross section, tot(pp→ZZ)=17.4±0.3(stat)±0.5(syst)±0.4(theo)±0.3(lumi) pb, measured for events with two pairs of opposite-sign, same-flavor leptons produced in the mass region 60<120GeV is consistent with standard model predictions. Differential cross sections are also measured and agree with theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ couplings.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., et al. (2021). Measurements of pp→ZZ production cross sections and constraints on anomalous triple gauge couplings at √=13TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(3) [10.1140/epjc/s10052-020-08817-8].

Measurements of pp→ZZ production cross sections and constraints on anomalous triple gauge couplings at √=13TeV

Xiao, J.;Benaglia, A.;Beschi, A.;Brivio, F.;Cetorelli, F.;Ciriolo, V.;De Guio, F.;Dinardo, M. E.;Ghezzi, A.;Govoni, P.;Guzzi, L.;Malberti, M.;Monti, F.;Moroni, L.;Paganoni, M.;Ragazzi, S.;de Fatis, T. Tabarelli;Valsecchi, D.;Zuolo, D.;Ortona, G.;Massironi, A.;Gerosa, R.;Lucchini, M. T.;
2021

Abstract

The production of Z boson pairs in proton–proton (pp) collisions, pp→(Z/∗)(Z/∗)→2ℓ2ℓ′, where ℓ,ℓ′=e or μ, is studied at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137fb−1, collected during 2016–2018. The ZZ production cross section, tot(pp→ZZ)=17.4±0.3(stat)±0.5(syst)±0.4(theo)±0.3(lumi) pb, measured for events with two pairs of opposite-sign, same-flavor leptons produced in the mass region 60<120GeV is consistent with standard model predictions. Differential cross sections are also measured and agree with theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ couplings.
Articolo in rivista - Articolo scientifico
Physics; LHC; CMS
English
2021
81
3
200
open
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., et al. (2021). Measurements of pp→ZZ production cross sections and constraints on anomalous triple gauge couplings at √=13TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(3) [10.1140/epjc/s10052-020-08817-8].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/308797
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