Opened 10 years ago
Last modified 10 years ago
#308 new Bug
Muon isolation in lhco files
| Reported by: | Miha Nemevsek | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Cc: |
Description
Dears,
we are running into some difficulty with isolation criteria for muons (possibly also electrons) when analysing the output of .lhco files created by root2lhco.
Events under study should contain at least one isolated muon(electron). We expect a small value for the isolation variable (defined in the lhco language as xxx/pt, where xxx is the integer part of the had/em column). Looking into .lhco files, this entry is rather large, i.e. O(1) or so.
Is it perhaps possible that root2lhco conversion keeps the muon pt within xxx when exporting/converting the had/em variable?
Thanks, Miha
Attachments (2)
Change History (3)
by , 10 years ago
| Attachment: | root2lhco_output.lhco added |
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by , 10 years ago
| Attachment: | delphes_card.tcl added |
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comment:1 by , 10 years ago
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Hi Miha,
yes, maybe there is a bug in the lhco converter. However you should not worry about that since all the muons that are written in the output are already isolated since they pass the isolation cuts inside delphes. So I guess you can safely take them all.
If you want to change the isolation criteria, I suggest you change the parameters inside the delphes_card.tcl you attached (around line 370).
Cheers,
Michele