Diffractive dissociation re-visited for predictions at the LHC.

Luna, E.G.S.; Khoze, V.A.; Martin, A.D.; Ryskin, M.G.

Abstract

We describe the formalism and present the results for a triple-Regge analysis of the available pp and pp¯pp¯ high-energy data which explicitly account for absorptive corrections. In particular, we allow for the gap survival probability, S2, in single-proton diffractive dissociation. Since for pp scattering the value of S2 is rather small, the triple-pomeron vertex obtained in this analysis is larger than that obtained in the old analyses where the suppression caused by the absorptive corrections was implicitly included in an effective vertex. We show that the bare triple-pomeron coupling that we extract from the pp and pp¯pp¯ data is consistent with that obtained in a description of the γp→J/ψ+Y HERA data. The analyses of the data prefer a zero slope, corresponding to the small size of the bare vertex, giving the hope of a smooth matching to the perturbative QCD treatment of the triple-pomeron coupling.

Citation

Luna, E., Khoze, V., Martin, A., & Ryskin, M. (2009). Diffractive dissociation re-visited for predictions at the LHC. The European Physical Journal C, 59, 1-12. https://doi.org/10.1140/epjc/s10052-008-0793-1

• Journal Article Type: Article
• Online Publication Date: Nov 21, 2008
• Publication Date: 2009-01
• Deposit Date: Jan 23, 2012
• Journal: European Physical Journal C: Particles and Fields
• Print ISSN: 1434-6044
• Electronic ISSN: 1434-6052
• Publisher: SpringerOpen
• Peer Reviewed: Peer Reviewed
• Volume: 59
• Pages: 1-12
• DOI: https://doi.org/10.1140/epjc/s10052-008-0793-1