Opened 9 years ago
Last modified 9 years ago
#750 new Bug
Jet phi distribution "lumpiness"
| Reported by: | Andy Buckley | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Cc: |
Description
As seen in the attached plot, in Delphes 3.1.2 (sorry, haven't updated yet!) high-stats truth events lead to jet phi distributions with large "statistical" fluctuations, when finding the jets at truth level via direct use of FastJet has very low fluctuations. Any idea what's going on? Looks like a discretisation issue, or a repeated random seed, or something...
Attachments (1)
Note:
See TracTickets
for help on using tickets.
Hi,
you are using a very old Delphes version. Could you please try using the latest release (version 3.3.0):
http://cp3.irmp.ucl.ac.be/downloads/Delphes-3.3.0.tar.gz
Since then we have added a parameter in the calorimeter module that takes care of smearing the point where the particle hit the calorimeter tower that should take care of the lumpiness:
This should be available since 3.2.0, but you might as well use the latest version.
If you are using Delphes via MG, since yesterday the "install Delphes" command should install 3.3.0.
Let me know if this fixes the issue,
Cheers,
Michele