We compute the cross section for exclusive double-diffractive
gg\gamma \gamma
production at the Tevatron,
p[`(p)] ® p + gg+ [`(p)]p{\bar{p}} \to p + \gamma \gamma + {\bar{p}}
, and the LHC. We evaluate both the
gg and
q[`(q)] tq\bar{q}\;\; t
-channel exchange contributions to the process. The observation of exclusive
gg\gamma \gamma
production at the Tevatron will provide a check on the model predictions and offer an opportunity to confirm the expectations for exclusive double-diffractive Higgs production at the LHC.
Received: 10 September 2004, Revised: 8 October 2004, Published online: 1 December 2004