Photon-exchange processes at hadron colliders as a probe of the dynamics of diffraction

Details Photon-exchange processes at hadron colliders as a probe of the dynamics of diffraction Photon-exchange processes at hadron colliders as a probe of the dynamics of diffraction

2002-01-31

arxiv.org/abs/hep-ph/0201301v2

Eur.Phys.J.C24:459-468,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 10 figures, Latex; some minor typos corrected, version to appear in Eur.Phys.J. C

Scientific paper

10.1007/s10052-002-0964-4

The rich structure of photon-exchange processes at hadron colliders is studied. We discuss central vector meson production pp --> p + J/psi + p, W production pp --> p + W + X and mu+ mu- production. Each process has distinct, and large, soft pp rescattering effects, which can be directly observed by detecting the outgoing protons. This allows a probe of the optical density of the proton, which plays a crucial role in the evaluation of the rapidity gap survival probabilities in diffractive-like processes at hadron colliders. We note that an alternative mechanism for J/psi production is odderon, instead of photon, exchange; and that the ratio of odderon to photon contributions is enhanced (suppressed) for phi(Upsilon) vector meson production.

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