Opened 9 years ago
Last modified 9 years ago
#772 new Bug
why ILD card do not contain a efficiency formula for the b tagging?
Reported by: | Li Huang | Owned by: | |
---|---|---|---|
Priority: | minor | Milestone: | |
Component: | Delphes code | Version: | Delphes 3 |
Keywords: | Cc: |
Description
hello,
why the ILD card does not contain the following efficiency formula for the b-tagging:
# default efficiency formula (misidentification rate)
add EfficiencyFormula {0} {0.001}
# efficiency formula for c-jets (misidentification rate)
add EfficiencyFormula {4} {0.05}
# efficiency formula for b-jets
add EfficiencyFormula {5} {0.75}
These formula are existing for the b-tagging in other detectors such as ATLAS and CMS.
Thanks!
Change History (2)
comment:2 by , 9 years ago
You are probably using some older version:
I suggest you take the latest Delphes version from github:
git clone https://github.com/delphes/delphes.git
Hi,
I am not sure what you are referring to but the efficiency formula for CMS and ATLAS are different wrt to what you mention:
https://github.com/delphes/delphes/blob/master/cards/delphes_card_ATLAS.tcl
https://github.com/delphes/delphes/blob/master/cards/delphes_card_CMS.tcl
You can check that for a pt of ~ 80 GeV you'll get eff ~ 75%.
Anyway, since the efficiency in the ILD card in taken from that of CMS, you are free to take whatever value you chose. Keep in mind however that having a flat b-tagging efficiency is dangerous, especially if you go to very high energy where the b-tagging efficiency typically drops.
Michele