HEPMC format 13 TeV proton-proton Open Data from the ATLAS experiment

<p>HEPMC format 13 TeV proton-proton Open Data from the ATLAS experiment.</p><p>This summary record is provided as a single point of entry and single record to cite for the HEPMC open data.</p><p>As additional datasets are added to the open data, this record will be extended.<p></p><i>Created on June 10th 2025. The record currently only contains the first set of samples. This is to allow time for community feedback (which is welcome). More samples will be added in the near future.</i></p>