Rapidity Gap Survival in Enhanced Pomeron Scheme

TL;DR

This paper investigates rapidity gap survival probabilities in proton-proton collisions using Reggeon field theory, finding that enhanced Pomeron interactions are subdominant but color fluctuations significantly influence the survival probability.

Contribution

It provides a detailed analysis of enhanced Pomeron diagrams' role in rapidity gap suppression and highlights the importance of color fluctuations in modeling diffractive processes.

Findings

Enhanced Pomeron interactions are subdominant in rapidity gap suppression.

Color fluctuations significantly affect the rapidity gap survival probability.

Experimental data can constrain models of diffractive dijet production.

Abstract

We apply the phenomenological Reggeon field theory framework to investigate rapidity gap survival (RGS) probability for diffractive dijet production in proton-proton collisions. In particular, we study in some detail rapidity gap suppression due to elastic rescatterings of intermediate partons in the underlying parton cascades, described by enhanced (Pomeron-Pomeron interaction) diagrams. We demonstrate that such contributions play a subdominant role, compared to the usual, so-called "eikonal", rapidity gap suppression due to elastic rescatterings of constituent partons of the colliding protons. On the other hand, the overall RGS factor proves to be sensitive to color fluctuations in the proton. Hence, experimental data on diffractive dijet production can be used to constrain the respective model approaches.