Three-jet DIS final states from kt-dependent parton showers

TL;DR

This paper investigates three-jet final states in deep inelastic scattering using advanced parton-shower methods to better understand angular correlations and improve agreement with experimental data.

Contribution

It introduces a novel approach combining transverse-momentum dependent parton distributions with matrix elements to model higher-order QCD radiation effects.

Findings

Monte-Carlo results show improved agreement with experimental data.

Higher-order QCD effects significantly influence angular correlations.

Parton-shower methods reduce theoretical uncertainties in three-jet observables.

Abstract

Experimental measurements of angular correlations in three-jet final states have recently been performed in DIS. Next-to-leading-order QCD results for these observables are affected by large theoretical uncertainties in the kinematic region of the data. We discuss the effects of multiple QCD radiation at higher order using parton-shower methods based on transverse-momentum dependent parton distributions and matrix elements. We present Monte-Carlo results for azimuthal two-jet and three-jet distributions, and discuss the comparison with experimental data.