ATLAS OmniFold Full Charged Particle Phase Space Open Data

Because the measurement is unbinned, results are provided as a dataset of particle level events simulated with Monte Carlo methods, with per-event weights provided by OmniFold. Applying the weights to the events and binning the events in some observable produces a differential cross section measurement in that observable.<br><br>Each Parquet file is self-contained, combining per-event variable-length arrays of particle kinematics (transverse momentum, pseudorapidity, azimuthal angle, and PDG ID for the two Z-decay muons plus all charged hadrons) with ~164 OmniFold weight columns per event.

The release includes:<br><br>- data.parquet, data-hv.parquet: the measurement dataset<br>- pseudodata.parquet, pseudodata-hv.parquet, truth_pseudodata.parquet: a pseudodata dataset for closure testing against known MC truth<br>- truth_madgraph.parquet: Monte Carlo truth-level predictions from MadGraph5_aMC@NLO+Pythia8, for comparison<br>- truth_sherpa.parquet: Monte Carlo truth-level predictions from Sherpa 2.2.11, for comparison<br>- models/: all trained OmniFold network checkpoints used to build the data measurement.