We report on a search for anomalous production of Z pairs
through a massive resonance decay in data corresponding to 2.5-2.9 fb-1
of integrated luminosity in p anti-p collisions at s**(1/2) ñ.96 TeV
using the CDF II detector at the Fermilab Tevatron. This analysis,
with more data and channels where the Z bosons decay to muons or jets,
supersedes the 1.1 fb-1 four-electron channel result previously published
by CDF. In order to maintain high efficiency for muons, we use a new
forward tracking algorithm and muon identification requires optimized
for these high signal-to-background channels. Predicting the dominant
backgrounds in each channel entirely from sideboard data samples,
we observe four-body invariant mass spectra above 300 GeV/c2 that are
consistent with background. We set limits using the acceptance for
a massive graviton resonance that are 7-20 times stronger than the
previously published direct limits on resonant ZZ production.
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Updated: Wednesday, 2011 July 06 15:25:31 CDT automatically from input from "Carol Picciolo"