Hadronic final states in DIS with Sherpa

TL;DR

This paper extends the Sherpa Monte Carlo generator to accurately simulate hadronic final states in deep inelastic scattering across all kinematic regimes by merging parton showers with matrix elements.

Contribution

It introduces a method to unify different resummation techniques in Sherpa, improving the reliability of predictions in all kinematic regions of DIS.

Findings

Enhanced simulation accuracy across kinematic regimes

Successful merging of parton showers with matrix elements

Reliable predictions for hadronic final states in DIS

Abstract

We present an extension of the multi-purpose Monte-Carlo event generator Sherpa for processes in deeply inelastic lepton-nucleon scattering. Hadronic final states in this kinematical setting are characterised by the presence of multiple kinematical scales, which were up to now accounted for only by specific resummations in individual kinematical regions. An extension of a known method for merging truncated parton showers with higher-order tree-level matrix elements allows to obtain predictions which are reliable in all kinematical limits.