Opened 11 years ago
Closed 11 years ago
#233 closed Bug (wontfix)
number of light jets and b-tagging efficiency
| Reported by: | wkotlarski | Owned by: | |
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| Priority: | major | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | jet energy scale | Cc: | Wojciech.Kotlarski@…, Jan.Kalinowski@…, Artur.Kalinowski@… |
Description
Dear Delphes authors
When I look at the number of light and b-tagged jets in Delphes coming from the same HepMC sample with two versions of CMS run cards (roughly before and after Changeset 1254) I see some very large differences. For this particular sample, average number o light jets drops from 2 to 1 and I get much smaller number of b-tagged jets. I was able to trace it to the JetEnergyScale module. As far as I can tell, this is the part that generates this shift. Is this behavior expected or am I missing something?
thanks in advance,
Wojciech
Attachments (3)
Change History (7)
by , 11 years ago
| Attachment: | sgluony0.75TeV_lewy.hepmc.gz added |
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by , 11 years ago
| Attachment: | delphes_card_CMS_dev.tcl added |
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by , 11 years ago
| Attachment: | delphes_card_CMS.tcl added |
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comment:2 by , 11 years ago
| Priority: | minor → major |
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comment:3 by , 11 years ago
Dear Wojciech,
Sorry for the late reply.
In delphes_card_CMS.tcl, MuonIsolation/muons array is added to UniqueObjectFinder. So, all the isolated muons reconstructed as jets are filtered out. That is why there are less jets when running with the delphes_card_CMS.tcl card.
I'd say that delphes_card_CMS.tcl is more correct.
Regards,
Pavel
comment:4 by , 11 years ago
| Resolution: | → wontfix |
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| Status: | new → closed |
Dear Wojciech,
could you please the two data cards you are referring to and a small hepmc file?
Thanks,
Michele