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Re: Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five partic [message #11231 is a reply to message #11228] Wed, 24 November 2010 13:57 Go to previous message
David Pohl is currently offline  David Pohl
Messages: 18
Registered: October 2009
Location: FZ Juelich
occasional visitor

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Hi Stefano,

okay. This means that the Kalman task does not take the bremsstrahlung correctly into account?

The x-y plane plots for the LheHits are not to easy to judge.
I think to recognize cirlces is not easy for the human brain Razz .

On the first view one can assume that the kaons for 200 MeV/c transverse momenta do not lie on a circle.
Especially in the outer regions:

Corresponding reconstructed transverse momenta:

For 300 MeV/c transverse momenta the kaon tracks do not look that bent:

Corresponding reconstructed transverse momenta:

For electrons its an issue of the Kalman task I think:

Corresponding reconstructed transverse momenta:

Honestly I am at the moment quite busy with writing my thesis Confused and have no time to do dedicated "bug search".
I just wanted to show this issue to inform the tracking experts.


p.s.: the plots in conformal mapping space are better to judge:
little bit bent
straight line

[Updated on: Wed, 24 November 2010 14:21]

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