how to extract weight from delphes root file

Asked by Rui Zhang

From parton level file, the "Event" branch can be converted into TRootLHEFEvent, as TRootLHEFEvent is defined in ExRootAnalysis.

But when I try TRootLHEFEvent for delphes level file and extract the "Weight", the results appear to be -nan. Maybe because the TRootLHEFEvent don't have some other members, like "Scale".

I also checked files in ExRootAnalysis, and didn't find suitable class.

Can you offer some help? Thank you!

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Olivier Mattelaer (olivier-mattelaer) said :

I will not be able to offer any help on that direction since this is outside my/our area of expertise.
Depending of the tools you use (Delphes or ExRootAnalysis) I would suggest to contact the associated author
(on github for Delphes, and direct email to pavel Demin for ExRootAnalysis)



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