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Diffractive $\gamma \gamma$ production at hadron colliders

Authors:	Email author" target="_blank">V?A?Khoze Email author A?D?Martin M?G?Ryskin W?J?Stirling

Institution:	(1) Department of Physics and Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE, UK;(2) Petersburg Nuclear Physics Institute, 188300 Gatchina, St. Petersburg, Russia;(3) Department of Mathematical Sciences, University of Durham, DH1 3LE, UK

Abstract:	We compute the cross section for exclusive double-diffractive $\gamma \gamma$ production at the Tevatron, $p{\bar{p}} \to p + \gamma \gamma + {\bar{p}}$ , and the LHC. We evaluate both the gg and $q\bar{q} t$ -channel exchange contributions to the process. The observation of exclusive $\gamma \gamma$ 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

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