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arXiv · hep-ph/9212212

Diffractive Hard Scattering with a Coherent Pomeron

John C. Collins·Leonid Frankfurt·Mark Strikman
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Abstract

Diffractive scattering involves exchange of a Pomeron to make a rapidity gap. It is normally assumed that to get a hard scattering in diffraction, one may treat the Pomeron as an ordinary particle, which has distributions of gluons and quarks. We show that this is not so: When we use perturbative QCD, there is a breakdown of the factorization theorem. The whole Pomeron can initiate the hard scattering, even though it is not point-like. Qualitatively, but not quantitatively, this gives the same effect as a delta function term in the gluon density in a Pomeron.

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John C. Collins, Leonid Frankfurt, Mark Strikman. 1992-12-02. Diffractive Hard Scattering with a Coherent Pomeron. https://doi.org/10.1016/0370-2693(93)90206-w

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