GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Analysis » Vertex Fitter in Fast simulation
Re: Vertex Fitter in Fast simulation [message #16139 is a reply to message #16125] Tue, 01 April 2014 11:21 Go to previous messageGo to previous message
donghee is currently offline  donghee
Messages: 385
Registered: January 2009
Location: Germnay
first-grade participant
From: *kph.uni-mainz.de
Hi,

I have same question, what Elisabetta pointed out.
You suggestion is not correctly working for composited candidate as like D+.
GetPosition() of D+ is everytime equal to zero, no meaning at all.

Let assume
I have three different tracklet for D+ decay into K- pi+ pi+, each composite track has different positions.
After composition to D+ we have total 3 variated positions according smearing of track smearing.

Quote:

RhoCandidate *dpk = dp[j]->Daughter(0); //
TVector3 dpVtx1 = dpk->Pos();
RhoCandidate *dppi1 = dp[j]->Daughter(1); //
TVector3 dpVtx2 = dppi1->Pos();
RhoCandidate *dppi2 = dp[j]->Daughter(2);
TVector3 dpVtx3 = dppi2->Pos();



where, dp = composite candidate list for D+ -> K- pi+ pi+




Best wishes,
Donghee

 
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: Thu Mar 28 16:05:01 CET 2024

Total time taken to generate the page: 0.00741 seconds