GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Analysis » Vertex Fitter in Fast simulation
Re: Vertex Fitter in Fast simulation [message #16412 is a reply to message #16407] Tue, 22 April 2014 19:41 Go to previous messageGo to previous message
Malte Albrecht is currently offline  Malte Albrecht
Messages: 11
Registered: May 2012
occasional visitor
From: *ep1.ruhr-uni-bochum.de
Hi Ralf,

thanks for your changes today, now my pulls and chi2 / Prob histograms look good. Actually what did the trick, are your changes to the calculation of the jacobian and the covPol, right?
Anyway, I did just a quick check, but 4C and mass constraint fits seem to be operational now.

Now one more question: How are staged fits handled? If I want a mass constraint fit (e.g. for an eta) and after that a 4C fit using the already pre-fitted 4vector of my mass-constrained-eta (which would then actually be a 5C-fit, but ok...) ?
From other fitters I just know, that one can add MassConstraints, or FourVector-constraints as many as one likes, but in the end one can still fit everything _together_ with one fitter object. Can I do something similar here, or do I always have to create new RhoCandidates and give them to the next fitter?

Greetings,
Malte
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: [FIXED] Error in <PndAnaPidCombiner::Apply>
Next Topic: Lambda Lambdabar simulations
Goto Forum:
  


Current Time: Sat Jun 15 22:40:23 CEST 2019

Total time taken to generate the page: 0.03303 seconds