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geane propagate((CbmTrackParH *TStart, CbmTrackParP *TEnd, Int_t PDG) [message #6653] Fri, 02 May 2008 12:00 Go to previous message
asanchez is currently offline  asanchez
Messages: 350
Registered: March 2006
first-grade participant
From: *kph.uni-mainz.de
Hi to Geane experts,

I have a question concerning the function
Propagate(CbmTrackParH *TStart, CbmTrackParP *TEnd, Int_t PDG)

I would like to calculate the length of a track provided
either by genfit or by lhetrack.
In genfit there is now the possibility to obtain
the Length (from geane)of the track by using

prop = _geane->Propagate(&par,&result,_pdg); //211

double l=_geane->GetLengthAtPCA();

But i see that one should always be able to provide
the pdg of the particle.

If one has already a fitted track, and has still access
to the track hits(first or last hit in the track),
is it possible to propagate to one volume(point, plane) by giving the track parameters and the position information, without giving the pdg code.

Thanks in advance

ALicia.

 
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