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Dynamics of diffractive dissociation

Khoze, V. A. and Martin, A. D. and Ryskin, M. G. (2021) 'Dynamics of diffractive dissociation.', The European Physical Journal C, 81 (2).


We describe a QCD based model which incorporates the main properties of the inclusive particle distributions expected for diffractive processes, including the diffractive dissociation at high energies. We study, in turn, the total cross section, σtot, the differential elastic, dσel/dt, cross section, the dependence of the single proton dissociation cross section, ξdσSD/dξ, on the momentum fraction, ξ=1−xL, lost by the leading proton, the multiplicity distributions in inelastic (non-diffractive) collisions and in the processes of dissociation. Besides this we calculate the mean transverse momenta of the ‘wee partons’ (secondaries) produced in the case of dissociation (that is in the processes with a large rapidity gap) and compare it with that in inelastic interactions.

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Publisher statement:Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
Date accepted:04 February 2021
Date deposited:21 September 2021
Date of first online publication:22 February 2021
Date first made open access:21 September 2021

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