Home » PANDA » PandaRoot » Tracking » GENFIT for transverse momenta < 200 GeV/c strange?!
| GENFIT for transverse momenta < 200 GeV/c strange?! [message #11194] |
Thu, 18 November 2010 11:48  |
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Hallo everybody,
at the moment I do some tracking tests with the Lhe package.
The parameters are:
- tracking detectors: MVD+TPC+GEM
- 1 pion per event
- theta=60, phi=0..360
- ideal track finder
- kalman task after helix prefit with pion particle hypothesis
- current PndRoot version: trunk, revision 10322
- only primary tracks are taken into account
for momenta down to 200MeV/c everything works great; but for
a momentum of pt = 100MeV/c even the simple helix prefit is better.
You can see that in the following plots:
works fine:
strange:
So I would like to ask the people who have more experience with
tracking what the reason is or could be.
greetings
David
[Updated on: Mon, 22 November 2010 20:47] Report message to a moderator |
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