An event generator for Lepton-Hadron Deep Inelastic Scattering at NLO+PS with POWHEG including mass effects

TL;DR

This paper introduces a new event generator for lepton-hadron deep inelastic scattering that accurately combines NLO QCD corrections with parton showers, including mass effects for leptons and quarks, to improve predictions for current and future experiments.

Contribution

The authors developed a comprehensive NLO+PS event generator within the POWHEG-BOX framework that accounts for mass effects in lepton-hadron DIS processes, enabling more precise simulations.

Findings

The generator provides fully differential NLO+PS predictions for various DIS processes.

Comparisons with existing data show good agreement, validating the approach.

Predictions for upcoming neutrino experiments at CERN are presented.

Abstract

We present a generator for lepton nucleon collisions in the DIS regime, focusing in particular on processes with a massive lepton and/or a massive quark in the final state. We have built a full code matching NLO QCD corrections to parton shower Monte Carlo programs in the POWHEG-BOX framework. Our code can be used to compute NLO+PS accurate fully differential predictions for neutral current and charged current processes, including processes with an incoming tau neutrino, and/or including charm quarks in the final state. We also made comparisons with available data and predictions for the new neutrino experiments at CERN.