GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung
Home » PANDA » PandaRoot » Bugs, Fixes, Releases » Problem with PndKinVtxFitter and Ks decays
Re: Problem with PndKinVtxFitter and Ks decays [message #14245 is a reply to message #14244] Wed, 28 November 2012 14:09 Go to previous messageGo to previous message
Albrecht Gillitzer is currently offline  Albrecht Gillitzer
Messages: 49
Registered: March 2004
continuous participant
 From: *ikp.kfa-juelich.de
Hello Ralf,

I have another problem with PndKinVtxFitter: After fitting the mu+ and mu- tracks from J/psi decay to a common vertex (and in case of more than one found combination taking the one with the best chi2) and applying a chi2 cut, the mu+mu- invariant mass distribution has a clearly larger width than obtained with the raw, unfitted tracks. I would expect the opposite since after fitting and chi2 cut the result should be closer to reality.
Is this also a "known issue"? And could you please also look into this problem?

cheers, Albrecht

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: [FIXED] Crash in PndDrcHitProducerIdeal with Mai2011 packages
Next Topic: [WARN] Removing candidates while looping over TCandList
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Thu Jul 10 20:03:03 CEST 2025

Total time taken to generate the page: 0.00774 seconds
.:: Contact :: Home :: Legal Notice :: Data Protection Policy ::.

Powered by: FUDforum 3.1.3.
Copyright ©2001-2023 FUDforum Bulletin Board Software