I've begun work on the V0 EDProducer module outlined in the last post. I started off using the reco::Vertex class to store the information about the reconstructed V0s, but I'm having problems. I'm unable at this point to pull the reconstructed track information out of the reco::Vertex objects that I create. It seems, in fact, that they aren't being stored at all.

I've been in contace with Luca Lista, and he thinks that it would be good if we create a V0Candidate class that would inherit from CompositeCandidate. I'm researching more the capabilities of the ParticleCandidates for storing track references and the vertex information. I may write an alternate version of my class that would use the Candidate structure. Apparently, this is hoped to be the standard tool for analysis.