Opened 10 years ago
Last modified 10 years ago
#316 new How to
How to find which matrix element parton a jet is from.
| Reported by: | Marc Thomas | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Cc: |
Description
Does Delphes contain information about which MadGraph level parton a jet originates from?
I'm producing root events via MG5->Pythia->Delphes, and want to implement basic c-tagging using efficiencies published by ATLAS. For this I need to match the ME partons with their jets. Is the information I need available in the Delphes root file?
Sorry if this is a simple question but I couldn't find a definitive answer.
(I wonder if I should be able to get this information from GenJet.Particles, but have had trouble accessing this information)
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You have access to all particles (both hard scattering and ps+hadronization) in the Particle branch.
What you can do is to check which jet matches with a DeltaR requirement the c-parton from the ME.