Measurements of pp → ZZ production cross sections and constraints on anomalous triple gauge couplings at √&lt;em&gt;s&lt;/em&gt; = 13TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.; Caminada, L.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Langenegger, U.; Rohe, T.; Vetens, W.

doi:10.1140/epjc/s10052-020-08817-8

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

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Erö J, Escalante Del Valle A, Frühwirth R, Jeitler M, Caminada L, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Vetens W, et al.

Citation

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., … Vetens, W. (2021). Measurements of pp → ZZ production cross sections and constraints on anomalous triple gauge couplings at √s = 13TeV. European Physical Journal C: Particles and Fields, 81(3), 200 (30 pp.). https://doi.org/10.1140/epjc/s10052-020-08817-8

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:40041

The production of Z boson pairs in proton–proton (pp) collisions, pp → (Z/γ^∗)(Z/γ^∗)→2ℓ2ℓ′, where ℓ,ℓ′=e or μ, is studied at a center-of-mass energy of 13 TeV 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, σ_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 < m_ℓ⁺ℓ^- < 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 ZZγ couplings.