GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Analysis » vertex fitting
Re: vertex fitting [message #17271 is a reply to message #17269] Wed, 10 September 2014 14:59 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *lnf.infn.it
If you have an efficiency high close to the IP and smaller far, then your fit will be biased. Then, in general, one uses simulation to evaluate the efficiency as a function of the position, and after you use this function to correct your experimental data.
The fact that you have a mean life different from the MC tells you that the reconstruction efficiency is not flat as a function of the distance. But I would not be scared by this.
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Is there a fast way of histogramming RhoCandLists?
Next Topic: Ds reconstruction - test with trunk rev-25813
Goto Forum:
  


Current Time: Fri Jan 18 20:52:02 CET 2019

Total time taken to generate the page: 0.02599 seconds