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

TL;DR

This paper measures dijet production in diffractive deep-inelastic scattering at HERA, comparing results with QCD predictions and extracting the strong coupling constant, advancing understanding of diffraction and QCD dynamics.

Contribution

It provides the first detailed measurement of dijet cross sections in diffractive DIS at HERA and tests QCD predictions using diffractive PDFs.

Findings

Measured dijet cross sections in diffractive DIS.

Compared results with NLO QCD predictions.

Extracted the strong coupling constant value.

Abstract

A measurement is presented of single- and double-differential dijet cross sections in diffractive deep-inelastic $ep$ scattering at HERA using data collected by the H1 experiment corresponding to an integrated luminosity of 290 pb^{-1}. The investigated phase space is spanned by the photon virtuality in the range of 4<Q^{2}<100 GeV^{2} and by the fractional proton longitudinal momentum loss x_pom<0.03. The resulting cross sections are compared with next-to-leading order QCD predictions based on diffractive parton distribution functions and the value of the strong coupling constant is extracted.