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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

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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[Message index]

		Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five particles By: David Pohl on Tue, 23 November 2010 18:09
		Re: Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five partic By: StefanoSpataro on Tue, 23 November 2010 23:30
		Re: Lhe tracking results: reconstruction error for transverse momenta <= 1 GeV/c, all five partic By: David Pohl on Wed, 24 November 2010 13:57

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