Measurement of the <i>ZZ</i> production cross section in proton-proton collisions at √<i>s</i>=8 TeV using the <i>ZZ</i> → <i>l</i><SUP>-</SUP> <i>l</i><SUP>+</SUP> <i>l</i>′<SUP>-</SUP> <i>l</i>′<SUP>+</SUP> and <i>ZZ</i> → <i>l</i><SUP>-</SUP> <i>l</i><SUP>+</SUP> ν(ν)over-bar decay channels with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2844 more authors) (2017) Measurement of the <i>ZZ</i> production cross section in proton-proton collisions at √<i>s</i>=8 TeV using the <i>ZZ</i> → <i>l</i><SUP>-</SUP> <i>l</i><SUP>+</SUP> <i>l</i>′<SUP>-</SUP> <i>l</i>′<SUP>+</SUP> and <i>ZZ</i> → <i>l</i><SUP>-</SUP> <i>l</i><SUP>+</SUP> ν(ν)over-bar decay channels with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2017 (1).

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Abstract

A 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.[Figure not available: see fulltext.]

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 14 Mar 2017 10:27
Last Modified: 18 Oct 2023 01:20
DOI: 10.1007/JHEP01(2017)099
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006372