Correcting measurements for detector effects and constructing appropriate public data representations is a pressing problem in LHC physics. Current methods solve this inverse problem by relying on iterations, minimax optimization, or a surrogate forward mapping. We introduce Adversary-free Unfolding SanS Iteration or Emulation (AUSSIE), which dispenses with these mechanisms while remaining asymptotically correct. AUSSIE replaces the second OmniFold step with a new loss function that directly yields solutions with minimal dependence on the reference simulation. We showcase AUSSIE on various unfolding tasks, including full-phase-space jet substructure.
Cite
@article{arxiv.2602.24282,
title = {Unfolding without Iterations, Adversaries, or Surrogates},
author = {Ayodele Ore and Tilman Plehn},
journal= {arXiv preprint arXiv:2602.24282},
year = {2026}
}