Opened 12 months ago
#1586 new Bug
Regarding Angular Smearing in Track
Reported by: | Jihee Kim | Owned by: | |
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Priority: | major | Milestone: | |
Component: | Delphes code | Version: | Delphes 3 |
Keywords: | Cc: | jkim11@… |
Description
Dear Delphes experts,
I would like to ask you about additional angular smearing that I have observed. In detector card, CtgTheta and Phi both resolution formula were set to be 0.0. When I used single charged pion particle gun, I see no angular smearing in pseudo-rapidity and azimuthal angle in Track branch and this was what I expected from detector card setting (Please see figures in left hand side). However, when I ran delphes with Pythia8 generator creating DIS events, I looked into charged pions from K short particle decay and found larger angular smearing in azimuthal angle only comparing to pseudo-rapidity in Track branch (Please see figures in right hand side). I would expect consistency on this matter. Also for instance, charged pions from D zero particle decay have almost no smearing in azimuthal angle and pseudo-rapidity. Would you be able to give me some explanation on what can cause this? Thank you!
Best regards,
Jihee