The QCD description of diffractive processes
M. Wusthoff, A.D. Martin
TL;DR
This paper reviews how perturbative QCD models diffractive processes, focusing on two-gluon exchange, vector meson production at HERA, and the non-factorization phenomenon at hadron colliders.
Contribution
It introduces the two-gluon exchange model for diffractive production and discusses non-factorization effects in hadron collider processes.
Findings
Two-gluon exchange effectively describes diffractive qq̄ and qq̄g production.
Diffractive vector meson production varies at different momentum transfers.
Diffractive processes do not factorize at hadron colliders.
Abstract
We review the application of perturbative QCD to diffractive processes. We introduce the two gluon exchange model to describe diffractive qq(bar) and qq(bar)g production in deep inelastic scattering. We study the triple Regge limit and briefly consider multiple gluon exchange. We discuss diffractive vector meson production at HERA both at t = 0 and large |t|. We demonstrate the non-factorization of diffractive processes at hadron colliders.
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