Inclusive diffraction

TL;DR

This paper reports measurements of hard diffractive interactions at HERA, analyzing the structure of diffractive exchange in terms of partons and testing QCD predictions for dijets and D* production in different regimes.

Contribution

It provides new experimental data on diffractive interactions and compares QCD-based predictions with measurements in photo and electroproduction regimes.

Findings

QCD predictions align with measured dijet and D* production.

Diffractive exchange structure is characterized in terms of partons.

Factorisation properties are examined across regimes.

Abstract

Results are given on the measurements of the hard diffractive interactions at HERA $ep$ collider. The structure of the diffractive exchange in terms of partons and the factorisation properties are discussed, in particular by comparing the QCD predictions for dijets and $D^*$ with measurements both in the photo and electroproduction regimes.