Opened 5 years ago
#1403 new How to
Understanding Truth and Reco Containers
| Reported by: | Vincent Croft | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Cc: |
Description
Hi all, I've been trying to make an example where I compare the di-photon pT constructed from the 4mom vector of the two leading Photon containers to that of the 2 leading GenParticle containers with pdgid==22 and status=1.
I hoped that one would give me the particle level quantities and reconstructed, detector level quantities. This detector level distribution does not look as expected.
The truth level distribution (obtained from the 'particle' containers) looks as I expect. The reconstructed di-photon distribution (from the 'Photon' containers) looks like a mass peak.
Should I be retrieving quantities other than Photon.Pt Photon.Eta Photon.Phi Photon.m ? Should I be matching the photon and particle objects?
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pt spectrum of Particle vs Photon pts