A model for strong interactions at high energy based on the CGC/saturation approach

TL;DR

This paper introduces a high-energy soft interaction model based on the CGC/saturation approach and BFKL Pomeron, successfully describing experimental data and predicting distinct diffraction behaviors.

Contribution

It develops a novel eikonal model using the dressed BFKL Pomeron within the CGC/saturation framework, providing a new approach to high-energy soft interactions.

Findings

Good fit to experimental data at energies above 0.546 TeV

Single diffraction cross section saturates around 10 mb at high energies

Double diffraction cross section grows slowly with energy

Abstract

We present our first attempt to develop a model for soft interactions at high energy, based on the BFKL Pomeron and the CGC/saturation approach. We construct an eikonal-type model, whose opacity is determined by the exchange of the dressed BFKL Pomeron. The Green's function of the Pomeron is calculated in the framework of the CGC/saturation approach. Using five parameters we achieve a good description of the experimental data at high energies ( $W\,\geq\,0.546\,TeV$). The model results in different behaviour for the single and double diffraction cross sections at high energies. The single diffraction cross section reaches a saturated value (about 10 mb) at high energies, while the double diffraction cross section continues growing slowly