In this Letter, we present a precise measurement of the total ZZ
production cross section in pp̅ collisions at √s=1.96 TeV, using
data collected with the CDF II detector corresponding to an integrated
luminosity of approximately 6 fb-1. The result is obtained by
combining separate measurements in the four-charged (ℓℓℓ′ℓ′)
and two-charged-lepton and two-neutral-lepton (ℓℓνν) decay modes
of the Z boson pair. The combined measured cross section for pp̅ →ZZ
is 1.64-0.38+0.44 pb. This is the most precise measurement of the
ZZ production cross section in 1.96 TeV pp̅ collisions to date.
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Updated: Wednesday, 2012 March 07 14:54:49 CST automatically from input from Stephanie A Schuler