A POWHEG generator for deep inelastic scattering
Abstract
We present a new event generator for the simulation of both neutral- and charged-current deep inelastic scattering (DIS) at next-to-leading order in QCD matched to parton showers using the POWHEG method. Our implementation builds on the existing POWHEG BOX framework originally designed for hadron-hadron collisions, supplemented by considerable extensions to account for the genuinely different kinematics inherent to lepton-hadron collisions. In particular, we present new momentum mappings that conserve the special kinematics found in DIS, which we use to modify the POWHEG BOX implementation of the Frixione-Kunszt-Signer subtraction mechanism. We compare our predictions to fixed-order and resummed predictions, as well as to data from the HERA ep collider. Finally we study a few representative distributions for the upcoming Electron Ion Collider.
Cite
@article{arxiv.2309.02127,
title = {A POWHEG generator for deep inelastic scattering},
author = {Andrea Banfi and Silvia Ferrario Ravasio and Barbara Jäger and Alexander Karlberg and Felix Reichenbach and Giulia Zanderighi},
journal= {arXiv preprint arXiv:2309.02127},
year = {2024}
}
Comments
54 pages, 25 figures, code obtainable from svn://powhegbox.mib.infn.it/trunk/User-Processes-RES/DIS