Diffractive dissociation in future electron-ion colliders

We study diffractive scattering cross sections, focusing on the rapidity gap distribution in realistic kinematics at future electron-ion colliders. Our study consists in numerical solutions of the QCD evolution equations in both fixed and running coupling frameworks. The fixed and the running coupling equations are shown to lead to different shapes for the rapidity gap distribution. The obtained distribution when the coupling is fixed exhibits a shape characteristic of a recently developed model for diffractive dissociation, which indicates the relevance of the study of that diffractive observable for the partonic-level understanding of diffraction.
Comment: 7 pages, 2 figures; Submission to SciPost, Contribution to the XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2021)