Measurement of the WZ and ZZ Production Cross Sections Using the WZ →3l + MET and ZZ → 4l Channels
Measuring heavy diboson production in pp collisions is a way of probing
the structure of the electroweak sector, and provides milestones on the way
to sensitivity to rare processes such as Higgs boson production. We measure
WZ and ZZ production in the three- and four-lepton channels.
Using 6 fb-1 of data collected by the CDF experiment in
pp collisions at 1.96
TeV we reconstruct 50 WZ → 3l + ν candidate events, where l is a charged lepton, and measure the ratio
Using 4 ZZ → 4l candidate events with M(ZZ) < 300 GeV we measure the ratio of the ZZ production cross section to the inclusive Z production cross section
Taking the theoretical value of σ (Z0→ l+l) pb we determine the diboson production cross sections
Normalizing to the inclusive Z production cross section reduces the systematic uncertainties on the measured cross sections.