Electroproduction of Dijets at Small Jet Separation

TL;DR

This paper reports measurements of dijet production in deep-inelastic scattering at high Q^2, demonstrating that NLO QCD calculations accurately describe the data when small jet separation is required, revealing a larger dijet fraction than typical analyses.

Contribution

It provides the first detailed comparison of NLO QCD predictions with dijet data in DIS using the Durham algorithm at small jet separation.

Findings

NLO QCD describes the data well with small jet separation.

Dijet events constitute about one-third of DIS events under these conditions.

The small jet separation criterion increases the dijet fraction compared to standard analyses.

Abstract

Dijet production in deep-inelastic scattering (DIS) in the range 150 < Q^2 < 35000 GeV^2 has been measured by the H1 collaboration using the Durham jet algorithm in the laboratory frame. QCD calculations in next-to-leading order (NLO) are found to give a good description of the data when requiring a small minimum jet separation, which selects a dijet sample containing 1/3 of DIS events in contrast to approximately 1/10 with more typical jet analyses.