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Measurement of the $ZZ$ production cross section in proton-proton collisions at $\sqrt s =$ 8 TeV using the $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to\ell^{-}\ell^{+}\nu\bar{\nu}$ channels with the ATLAS detector

The ATLAS collaboration
JHEP 1701 (2017) 099, 2017

Abstract (data abstract)
CERN-LHC. Measurements of the cross section for ZZ production using the 4l and 2l2nu decay channels in proton-proton collisions at a centre-of-mass energy of 8 TeV with 20.3 fb^-1 of data collected in 2012. The final states used are 4 electrons, 4 muons, 2 electrons and 2 muons, 2 electrons and missing transverse momentum, and 2 muons and missing transverse momentum (MET). The uncertainty on the global normalisation ("Lumi") is 1.9%. See JHEP 01 (2017) 099 for more details. The 4l channel fiducial region is defined as: - 4e, 4mu or 2e2mu - Ambiguities in pairing are resolved by choosing the combination that results in the smaller value of the sum |mll - mZ| for the two pairs, where mll is the mass of the dilepton system. - ptLepton > 7 GeV (at least one with ptLepton > 24 GeV) - |etaMuon| <2.7, |etaElectron|<2.5 (for all but one electron), |etaElectron|<4.9 (for at most one electron) - Both lepton pairs are required to have invariant mass between 66 and 116 GeV. - min(DeltaR(l,l)) > 0.2. The 2l2nu channel fiducial region is defined as: - 2e+MET or 2mu+MET - ptLepton > 25 GeV - |etaLepton| < 2.5 - mll must be between 76 and 106 GeV - -MET*cos(phi_METZ)>90 GeV, where phi_METZ is the angle between the Z and the MET - |MET - pTZ| / pTZ < 0.4, where pTZ is the transverse momentum of the dilepton system - No events with a jet for which ptJet > 25 GeV and |etaJet| < 4.5 - No events with a third electron (muon) for which ptLepton > 7 (6) GeV - min(DeltaR(l,l)) > 0.3

  • Table 1

    Data from Page 22 of preprint

    10.17182/hepdata.76732.v1/t1

    The measured fiducial cross sections and the combined total cross section compared to the SM predictions. For experimental results, the...

  • Table 2

    Data from Figure 6a

    10.17182/hepdata.76732.v1/t2

    The measured differential cross-section normalized to the bin width in values of the leading reconstructed dilepton pT for the 4...

  • Table 3

    Data from Figure 6b

    10.17182/hepdata.76732.v1/t3

    The measured differential cross-section normalized to the bin width in values of the number of reconstructed jets for the 4...

  • Table 4

    Data from Figure 6c

    10.17182/hepdata.76732.v1/t4

    The measured differential cross-section normalized to the bin width in values of the angle between the leptons in the leading...

  • Table 5

    Data from Figure 6d

    10.17182/hepdata.76732.v1/t5

    The measured differential cross-section normalized to the bin width in values of the rapidity difference between the reconstructed lepton pairs...

  • Table 6

    Data from Figure 7A

    10.17182/hepdata.76732.v1/t6

    The measured differential cross-section normalized to the bin width in values of the leading reconstructed dilepton pT for the 2...

  • Table 7

    Data from Figure 7B

    10.17182/hepdata.76732.v1/t7

    The measured differential cross-section normalized to the bin width in values of the angle between the dilepton pair for the...

  • Table 8

    Data from Figure 7C

    10.17182/hepdata.76732.v1/t8

    The measured differential cross-section normalized to the bin width in values of the transverse mass of the reconstructed diboson pair...

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