Alternative path to truth link for small collections (!35782) · Merge requests · atlas / athena

Zach Marshall requested to merge zmarshal/athena:21.2_TruthLinkFallback into 21.2 Aug 20, 2020

When running on TRUTH3 collections, the truth particle links from reco objects show up as TruthLink rather than truthParticleLink (because of the naming conventions in the truth relink code in DerivationFrameworkMCTruth). This updates the truth helpers to look in the standard location, and if the links cannot be resolved for any reason to fall back to look in that alternative location. Resolves the latest question in ATLASG-1502.

Thanks to @mvanadia for the report.

Alternative path to truth link for small collections

Merge request reports