Add association between ReconstructedParticle and Vertex

[fdplacido]

BEGINRELEASENOTES

• Add association between ReconstructedParticle and Vertex

ENDRELEASENOTES

[tmadlener]

What is the use case for this? In principle a Vertex already has a relation to a ReconstructedParticle and vice versa.

EDM4hep/edm4hep.yaml

Line 382 in b1b0b2b

- edm4hep::ReconstructedParticle associatedParticle //reconstructed particle associated to this vertex.

and

EDM4hep/edm4hep.yaml

Line 399 in b1b0b2b

- edm4hep::Vertex startVertex //start vertex associated to this particle

[andresailer]

a collection like this is created by LCFIPlus

https://github.com/lcfiplus/LCFIPlus/blob/278d7bb54e2602c2c0cd170c00f72fe302794bcf/src/LCIOStorer.cc#L954

[tmadlener]

Ah yes, I see. I have opened an issue in podio to support arbitrary associations. Not entirely sure about the timeline though ;)

In principle I don't see anything that speaks against merging this now and then reworking things once (if) arbitrary associations arrive in podio.

[fdplacido]

Ah yes, I see. I have opened an issue in podio to support arbitrary associations. Not entirely sure about the timeline though ;)

In principle I don't see anything that speaks against merging this now and then reworking things once (if) arbitrary associations arrive in podio.

I would say we go ahead and merge this, since there are other association collections around already. All those would change once the arbitrary collections are in place.