Search for new particles decaying to ZZZ Z using final states with leptons and jets with the ATLAS detector in s=7\sqrt{s}=7 TeV proton-proton collisions

Collaboration
Mar, 2012
20 pages
Published in:
  • Phys.Lett.B 712 (2012) 331-350
  • Published: Jul 16, 2013
e-Print:
Report number:
  • CERN-PH-EP-2012-026
Experiments:

Citations per year

2012201520182021202402468101214
Abstract: (Elsevier)
A search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02 fb−1 of integrated luminosity collected by the ATLAS experiment from pp collisions at s=7 TeV . Events containing either four charged leptons ( ℓℓℓℓ ) or two charged leptons and two jets ( ℓℓjj ) are analyzed and found to be consistent with the Standard Model background expectation. Lower limits on a resonance mass are set using the Randall–Sundrum (RS1) graviton model as a benchmark. Using both ℓℓℓℓ and ℓℓjj events, an RS1 graviton with k/m¯pl=0.1 and mass between 325 and 845 GeV is excluded at 95% confidence level. In addition, the ℓℓℓℓ events are used to set a model-independent fiducial cross section limit of σfid(pp→X→ZZ)<0.92pb at 95% confidence level for any new sources of ZZ production with mZZ greater than 300 GeV.
Note:
  • 19 pages plus author list (42 pages total), 5 figures, 6 tables, revised author list, matches Physics Letters B version
  • Z0: pair production
  • narrow resonance: mass
  • p p: scattering
  • ATLAS
  • Randall-Sundrum model