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ParamFirst vs. ParamLast [message #9496]

Thu, 01 October 2009 16:52

Tobias Stockmanns
Messages: 489
Registered: May 2007

first-grade participant

From: *ikp.kfa-juelich.de

Dear pandaRooters,

I am playing at the moment with the PndLheKalmanTask and I realized the following problem:

I have simulated a K- and a pi+. After I have fitted the tracks with Genfit I get a PndTrack with the parameters of the track stored for the first and the last point of the track.

Unfortunately for many (but not all) tracks the momentum vector of the track at the beginning and at the end point into the opposite direction (see attached picture).

index.php?t=getfile&id=5654&private=0

Does someone of you have encountered a similar problem or knows, what the reason can be?

Cheers,

Tobias

By the way I am using revision 6386 of pandaRoot

Attachment: ProblemsParamFirstLast.jpg
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[Message index]

		ParamFirst vs. ParamLast By: Tobias Stockmanns on Thu, 01 October 2009 16:52
		Re: ParamFirst vs. ParamLast By: StefanoSpataro on Thu, 01 October 2009 18:00
		Re: ParamFirst vs. ParamLast By: asanchez on Fri, 02 October 2009 09:15
		Re: ParamFirst vs. ParamLast By: StefanoSpataro on Fri, 02 October 2009 09:25
		Re: ParamFirst vs. ParamLast By: Tobias Stockmanns on Fri, 02 October 2009 11:42

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