Opened 4 months ago
Last modified 4 months ago
#1596 new Enhancement
Meaning of Delphes “Track” outputs
| Reported by: | muon_neutrino | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | Delphes code | Version: | Delphes 3 |
| Keywords: | Cc: |
Description
Hello, I have a very newbie question to ask.
I was told that Delphes does not reconstruct the trajectory of the particles, as it is a fast simulator. However, after looking at the root output from Delphes I realized that it contains many “tracks” and “tracking” data. For instance, there is a whole branch with the name Tracks.
So, what specifically does Delphes mean when it says “Tracks”?
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An answer to this question can be found in section 2.1 of the Delphes 3 article.
Charged particles have a user-defined probability to be reconstructed as tracks in the
central tracking volume. A perfect angular resolution on tracks is assumed, therefore only
a smearing on the norm of the transverse momentum vector is applied at the stage of
particle propagation. This hypothesis is valid for most of the past, present and future
particle detectors. As for the tracking efficiency, energy and momentum resolutions can be
specified by the user and depend on the particle type, transverse momentum and pseudo-
rapidity.