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@ARTICLE{Collaboration:224407,
      key          = {224407},
      collaboration = {{ATLAS Collaboration}},
      title        = {{M}easurements of four-lepton production in pp collisions
                      at $\sqrt{s}= 8$ {T}e{V} with the {ATLAS} detector},
      reportid     = {PUBDB-2015-03547, ATLAS-CONF-2015-031},
      pages        = {1-28},
      year         = {2015},
      abstract     = {The four-lepton (4ℓ, ℓ=e,μ) production is measured in
                      a mass range from 80 to 1000 GeV using 20.3 fb−1 of data
                      in pp collisions at s√=8 TeV at the LHC with the ATLAS
                      detector. The 4ℓ signal events come from the decays of
                      resonant Z and Higgs bosons and the non-resonant ZZ
                      continuum produced from qq¯, gg, and qg initial states. A
                      total of 476 signal candidate events is observed with a
                      background expectation of 26.2±3.6 events, enabling the
                      measurement of the integrated cross section and the
                      differential cross section as a function of the invariant
                      mass and transverse momentum of the four-lepton system. In
                      the mass range above 180 GeV, assuming the theoretical
                      constraint on the qq¯ production cross section calculated
                      with perturbative next-to-next-to leading order (NNLO) QCD
                      and next-to-leading order (NLO) Electroweak corrections, the
                      signal strength of the gluon-fusion component with respect
                      to the leading order (LO) prediction is determined to be
                      μgg=2.4±1.0(stat.)±0.5(syst.)±0.8(theory)},
      cin          = {ATLAS},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)15},
      url          = {https://bib-pubdb1.desy.de/record/224407},
}