We present the first observation and cross section measurement
of exclusive dijet production in p anti-p interactions, p anti-p -->
pbar + dijet + p. Using a data sample of 310 pb-1 collected by the
Run II Collider Detector at Fermilab at s**(1/2) = 1.96 TeV, exclusive
cross sections for events with two jets of transverse energy Ejet_T
> 10 TeV have been measured as a function of minimum Ejet_T. This
exclusive signal is extracted from fits to data distributions based on
Monte Carlo simulations of expected dijet signal and background shapes.
The simulated background distribution shapes are checked in a study of
a largely independent data sample of 200 pb-1 of b-tagged jet events,
where exclusive dijet production is expected to be suppressed by the
J_z = 0 total angular momentum selection rule. Results obtained are
compared with theoretical expectations, and implications for exclusive
Higgs boson production at the pp Large Hadron Collider at s**(1/2) =
14 TeV are discussed.
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Updated: Tuesday, 2008 March 25 15:12:53 CDT automatically from input from carol picciolo