Measurement of $ZZ$ production in $pp$ collisions at $\sqrt{s}=7$ TeV and limits on anomalous $ZZZ$ and $ZZ\gamma$ couplings with the ATLAS detector

Aad, Georges; Abajyan, Tatevik; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdelalim, Ahmed Ali; Abdinov, Ovsat; Aben, Rosemarie; Abi, Babak; Abolins, Maris

doi:10.1007/JHEP03(2013)128

Measurement of $ZZ$ production in $pp$ collisions at $\sqrt{s}=7$ TeV and limits on anomalous $ZZZ$ and $ZZ\gamma$ couplings with the ATLAS detector

ATLAS

Collaboration

Nov, 2012

30 pages

Published in:

JHEP 03 (2013) 128

Published: Mar 21, 2013

e-Print:

1211.6096 [hep-ex]

DOI:

10.1007/JHEP03(2013)128

PDG:

\mathit f{}^{\mathit V}_{\mathit i}

Report number:

CERN-PH-EP-2012-318

Experiments:

CERN-LHC-ATLAS

View in:

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Abstract: (Springer)

A measurement of the ZZ production cross section in proton-proton collisions at TeV using data recorded by the ATLAS experiment at the Large Hadron Collider is presented. In a data sample corresponding to an integrated luminosity of 4.6 fb(−1) collected in 2011, events are selected that are consistent either with two Z bosons decaying to electrons or muons or with one Z boson decaying to electrons or muons and a second Z boson decaying to neutrinos. The ZZ ((*)) → ℓ (+) ℓ (−) ℓ (′+) ℓ (′−) and cross sections are measured in restricted phase-space regions. These results are then used to derive the total cross section for ZZ events produced with both Z bosons in the mass range 66 to 116 GeV, pb, which is consistent with the Standard Model prediction of pb calculated at next-to-leading order in QCD. The normalized differential cross sections in bins of various kinematic variables are presented. Finally, 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.

Note:

30 pages plus author list (47 pages total), 13 figures, 9 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-02/

p p: scattering
coupling: (3gauge boson)
higher-order: 1
Z0: pair production
Z0: leptonic decay
ATLAS
differential cross section
quantum chromodynamics
transverse momentum: dependence
channel cross section: measured

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Measurement of ZZZZZZ production in pppppp collisions at s=7\sqrt{s}=7s​=7 TeV and limits on anomalous ZZZZZZZZZ and ZZγZZ\gammaZZγ couplings with the ATLAS detector

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Measurement of $ZZ$ production in $pp$ collisions at $\sqrt{s}=7$ TeV and limits on anomalous $ZZZ$ and $ZZ\gamma$ couplings with the ATLAS detector