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
Description
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.
Journal
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- Journal of high energy physics
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Journal of high energy physics 2017 (1), 99-, 2017-01
Springer
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Details 詳細情報について
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- CRID
- 1571980077558244352
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- NII Article ID
- 120007129211
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- ISSN
- 10298479
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- Text Lang
- en
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- Data Source
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- CiNii Articles