Measurement of the ZZ production cross section in proton-proton collisions at s√=8 TeV using the ZZ → ℓ⁻ℓ⁺ℓ′⁻ℓ′⁺ and ZZ→ℓ⁻ℓ⁺νν¯¯¯ decay channels with the ATLAS detector

Aaboud, M.Aad, G.Abbott, B.Abdallah, J.Abdinov, O.Abeloos, B.Aben, R.AbouZeid, O.Abraham, N.Abramowicz, H.Abreu, H.Abreu, R.Abulaiti, Y.Acharya, B.Adachi, S.Adamczyk, L.Adams, D.Adelman, J.Adomeit, S.Adye, T.et al.2018-10-152018-10-152017Journal of High Energy Physics (JHEP), 2017; 2017(1):099-1-099-531126-67081029-8479http://hdl.handle.net/2440/115084A measurement of the ZZ production cross section in the ℓ−ℓ+ℓ′ −ℓ′ + and ℓ−ℓ+νν¯¯¯ channels (ℓ = e, μ) in proton-proton collisions at s√=8TeV at the Large Hadron Collider at CERN, using data corresponding to an integrated luminosity of 20.3 fb−1 collected by the ATLAS experiment in 2012 is presented. The fiducial cross sections for ZZ → ℓ−ℓ+ℓ′ −ℓ′ + and ZZ→ℓ−ℓ+νν¯¯¯ are measured in selected phase-space regions. The total cross section for ZZ events produced with both Z bosons in the mass range 66 to 116 GeV is measured from the combination of the two channels to be 7.3 ± 0.4(stat) ± 0.3(syst) − 0.1 − 0.2 (lumi) pb, which is consistent with the Standard Model prediction of 6. 6 − 0.6 + 0.7 pb. The differential cross sections in bins of various kinematic variables are presented. The differential event yield as a function of the transverse momentum of the leading Z boson is used to set limits on anomalous neutral triple gauge boson couplings in ZZ production.en© The Author(s) 2017. This article is published under an open access license. Please check the 'Copyright Information' section for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.Hadron-Hadron scattering (experiments)Measurement of the ZZ production cross section in proton-proton collisions at s√=8 TeV using the ZZ → ℓ⁻ℓ⁺ℓ′⁻ℓ′⁺ and ZZ→ℓ⁻ℓ⁺νν¯¯¯ decay channels with the ATLAS detectorMeasurement of the ZZ production cross section in proton-proton collisions at s root=8 TeV using the ZZ -> l(-)l(+)l'(-)l'(+) and ZZ->l(-)l(+)nu nu -bar decay channels with the ATLAS detectorJournal article003006796310.1007/JHEP01(2017)0990003976442000012-s2.0-85011411626287209