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Re: Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five partic [message #11228 is a reply to message #11227] Tue, 23 November 2010 23:30 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: 217.112.73*
Hi,
about the systematic shift of the electron residual, I think this could be correlated to bremsstrahlung, then the MC momentum is higher than the reconstructed one.
About bad resolution for protons and kaons, maybe you could try to plot the LheHit Y vs X so see if they are really helix or if they are too curly.
You shouls also check the angle resolution. If maybe the helix momentum is fine, but the theta is wrong, maybe the kalman is not able to fit the track properly.
Just trying to guess, I have never checked the reconstruction for other particles different from muons.
 
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