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SUMMARY:Measurement of the ZZ production cross section in proton-proton co
 llisions at 7 TeV with the ATLAS detector
DTSTART;VALUE=DATE-TIME:20110812T161000Z
DTEND;VALUE=DATE-TIME:20110812T163000Z
DTSTAMP;VALUE=DATE-TIME:20130619T134839Z
UID:indico-contribution-536@cern.ch
DESCRIPTION:Speakers: HSU\, Shih-Chieh (Physics Division-Lawrence Berkeley
  National Lab. (LBNL))\nA measurement of the ZZ production cross section i
 n proton-proton collisions at sqrts=7TeV using data collected by the ATLAS
  experiment at the LHC is presented. In a data sample corresponding to an 
 integrated luminosity of 1.02 ifb\, 12 candidate events of purely leptonic
 ally decaying Z bosons with electrons and/or muons in the final state were
  observed. The expected background contribution is 0.3−0.3+0.9ext(stat)
 −0.3+0.4ext(syst) events. The total cross section for on-shell ZZ produc
 tion has been determined to be sigmaZZmathrmtot=8.4−2.3+2.7ext(stat)−0
 .7+0.4ext(syst)pm0.3extrm(lumi)pb and is in agreement with the Standard Mo
 del expectation of 6.5−0.2+0.3 pb calculated at the next-to-leading orde
 r in QCD. Limits on anomalous neutral triple gauge boson couplings are der
 ived.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=536&sessio
 nId=12&confId=129980
LOCATION:Rhode Island Convention Center 552 A
URL:http://indico.cern.ch/contributionDisplay.py?contribId=536&sessionId=1
 2&confId=129980
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