Journal of High Energy Physics

, 2016:142 | Cite as

Hard diffraction with dynamic gap survival

  • Christine O. RasmussenEmail author
  • Torbjörn Sjöstrand
Open Access
Regular Article - Theoretical Physics


We present a new framework for the modelling of hard diffraction in pp and \( \mathrm{p}\overline{\mathrm{p}} \) collisions. It starts from the the approach pioneered by Ingelman and Schlein, wherein the single diffractive cross section is factorized into a Pomeron flux and a Pomeron PDF. To this it adds a dynamically calculated rapidity gap survival factor, derived from the modelling of multiparton interactions. This factor is not relevant for diffraction in ep collisions, giving non-universality between HERA and Tevatron diffractive event rates. The model has been implemented in Pythia 8 and provides a complete description of the hadronic state associated with any hard single diffractive process. Comparisons with \( \mathrm{p}\overline{\mathrm{p}} \) and pp data reveal improvement in the description of single diffractive events.


QCD Phenomenology Phenomenological Models 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2016

Authors and Affiliations

  1. 1.Theoretical Particle Physics, Department of Astronomy and Theoretical PhysicsLund UnicersityLundSweden

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