ExHuME: A Monte Carlo Event Generator for Exclusive Diffraction

TL;DR

This program implements the KMR model, which is the only fully perturbative model of exclusive production, and offers the opportunity to study particle production in a uniquely clean environment for a hadron collider.

Abstract

We have written the Exclusive Hadronic Monte Carlo Event (ExHuME) generator. ExHuME implements the perturbative QCD calculation of Khoze, Martin and Ryskin of the process pp-> p+X+p, where X is a centrally produced colour singlet system.

Figures (2)

• Figure 1: The Exclusive Diffractive Process
• Figure 2: The default luminosity used in ExHuME at collider energies of 1.96 TeV (dashed line) and 14 TeV (solid line). a) shows the luminosity vs. the invariant mass of the fusing gluons at zero rapidity. b) shows the rapidity dependence of the luminosity when the invariant mass of the fusing gluons is fixed at 120 GeV. A fixed survival factor of $0.03$ ($14$ TeV) or $0.045$ ($1.96$ TeV) has been included and the luminosity has been integrated over the $p_{\perp}$ of the outgoing protons.