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Re: Using Rho without MC info [message #18404 is a reply to message #18401] Thu, 06 August 2015 07:57 Go to previous messageGo to previous message
Klaus Götzen is currently offline  Klaus Götzen
Messages: 293
Registered: June 2006
Location: GSI
first-grade participant
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Hi Marcel,

I'm not completely sure whether I understand your problem. One thing is MC truth information, another is combining RhoCandLists, and I don't see a big connection between them. Combining neutrals exactly works like combining charged particles, so it should work like you wrote in case you have proper RhoCandLists.

If you'd like to build your own candidates (from e.g. your clusters), so that you can combine them via RhoCandList::Combine(), you can take a look how candidates are created from FairRecoCands in PndAnalysis::ReadRecoCandidates(). You would have to create FairRecoCands from your clusters beforehand. Important is to give each RhoCandidate a uid (unique id) in case you need overlap control, since the bitmarkers are set according to it. For pi0 -> gamma gamma it shouldn't play a role though.

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