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Event generation at MEPS@NLO accuracy in neutral and charged current DIS at the EIC

Peter Meinzinger1,*, Daniel Reichelt2,†, and Federico Silvetti3,‡

  • *Contact author: peter.meinzinger@uzh.ch
  • †Contact author: d.reichelt@cern.ch
  • ‡Contact author: federico.silvetti@durham.ac.uk
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Phys. Rev. D 112, 074039 – Published 28 October, 2025

DOI: https://doi.org/10.1103/1c38-jrb1

Abstract

We present state-of-the-art hadron-level predictions for the deep-inelastic scattering process at next-to-leading-order precision for several multiplicities, consistently merged in one sample. For the first time at this level of accuracy, we consider both neutral and charged current deep-inelastic scattering at the Electron-Ion Collider and present the first application of consistent next-to-leading-order merging to charged current deep-inelastic scattering in general. We critically examine inclusive predictions using multileg merging techniques, contrasting perturbative and nonperturbative uncertainties. Further, we study typical kinematic deep-inelastic scattering observables as well as jet measurements and 1-jettiness with realistic cuts implied by expected and past detector resolution. On the perturbative side, we see large corrections toward small virtualities and Bjorken-x, which can be captured by higher-multiplicity matrix elements and the merging procedure. Nonperturbative effects, while negligible in most jet observables, can reach similar size as the perturbative uncertainties around the peak of the 1-jettiness distributions especially at low values of Q2.

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Phys. Rev. D 112, 074039– Published 28 October, 2025
  • Received 16 June 2025
  • Accepted 30 September 2025
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