Opened 4 years ago
#1482 new Bug
question on ATLAS detector card
| Reported by: | Shuo Han | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Detector configs | Cc: | haichenwang@…, shuohan@… |
Description
Dear Delphes experts,
I am a postdoc working on physics analysis with the ATLAS experiment, recently I am generating Higgs->gamma gamma events with Delphes, I generated LHE file from Madgraph, and read LHE with the Pythia example in Delphes (./examples/Pythia8/configLHE.cmnd)
The problem is, I used both CMS and ATLAS detector configs for this generation
./cards/delphes_card_CMS_PileUp.tcl
./cards/delphes_card_ATLAS_PileUp.tcl
and found out the di-photon mass resolution is much wider with ATLAS config, about 3 times as the resolution we observed in ATLAS experiments, the CMS config also has a wider mass resolution but is comparable to the real detector effect.
I did some check and found it's not directly caused by the energy resolution of photons, but more related to the angular distribution of photons.
I want to ask whether this ATLAS card was up to date and is this detector performance difference already discussed somewhere? or do you know someone I can raise this question to? Any thoughts may be very helpful, Thanks a lot in advance!
Link of the problematic card: https://github.com/delphes/delphes/blob/master/cards/delphes_card_ATLAS_PileUp.tcl
Best,
Shuo Han
