Measurement of Dijet Production in Diffractive Deep-Inelastic Scattering at HERA

TL;DR

This paper reports on the measurement of dijet production in diffractive deep-inelastic scattering at HERA, comparing experimental data with NLO QCD predictions to test the understanding of diffraction and parton dynamics.

Contribution

It provides the first detailed measurement of diffractive dijet production at HERA and compares results with NLO QCD calculations using diffractive parton densities.

Findings

Data agree well with NLO QCD predictions

Dijet cross sections measured across various kinematic variables

Supports the validity of diffractive parton density functions

Abstract

The production of dijets is measured in diffractive deep-inelastic scattering at HERA. The data were recorded with the H1 detector at DESY in the years 2003-2007. Diffractive events are selected by requiring a gap in the rapidity distribution of the hadronic systen, where no particles are produced. Two jets are selected with transverse momenta in the hadronic-centre-of-mass system larger than 4 and 5.5GeV, respectively. Cross sections are measured single- and doubledifferentially in various kinematic quantities. The data are found to be in good agreement with NLO QCD calculations based on diffractive parton densities determined frominclusive diffractive cross section measurements.