GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Tracking » Cleanup functions
Re: Cleanup functions [message #17367 is a reply to message #17360] Thu, 02 October 2014 15:40 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *
Dear all,
I tried the last tracking code, switch all the possible cleanup options, and verifying the analysis results from the standard nechmark channel (psi(2s) -> J/psi pi+ pi-) without any background mixing.

Here you can see the j/psi and the psi(2s) invariant mass distributions:


At a first glance, it seems the cleanup code affects mostly low p tracks (the pions), while the efficiency values for the high p (muons from j/psi) are consistent. Moreover, Mvd cleanup does not reduce the counts so much, the strongest effect comes from the stt cleanup. Of course the code should be verified with the event mixing (thing that I am NOT going to do now).
  • Attachment: cucomp.gif
    (Size: 17.00KB, Downloaded 433 times)
Read Message
Read Message
Read Message
Previous Topic: double tracks in offline Pattern Recognition
Next Topic: antiprotons lost above 10 degrees
Goto Forum:

Current Time: Thu Jun 13 04:25:54 CEST 2024

Total time taken to generate the page: 0.01205 seconds