Fix the way to write beam particles in MCEventCollection for HepMC3 branch (!47934) · Merge requests · atlas / athena · GitLab

Andrii Verbytskyi requested to merge averbyts/athena:03.11.2021fixoutputv2 into master Nov 04, 2021

Fix the way to write beam particles in MCEventCollection for HepMC3 branch.

Tag @ewelina @jchapman

Should fix https://its.cern.ch/jira/browse/AGENE-2097

This is a squashed version of !47919 (closed)