Sweeping !51883 from 21.6 to 22.0-mc20. Make particle gun samples have the correct masses (GeV to MeV change) (!51914) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-f4ced4e492f-22.0-mc20 into 22.0-mc20 Apr 04, 2022

Make particle gun samples have the correct masses (GeV to MeV change)

See merge request !51883 (merged)