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Check of GENFIT effects on reconstructed barrel tracks [message #14578]

Fri, 05 April 2013 19:26

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: 202.122.36*

Dear all,
I have done a small systematic study on the possible bias that GENFIT could introduce on reconstructed barrel tracks, and I attach here a presentation with the results I obtained.

I copy here my final conclusions:

 * GENFIT is stable for reconstruction of barrel tracks
 * GENFIT loss in efficiency is negligible
 * The minimum momentum resolution is ~1.5%, not possible to go below this number (material effects? field? hit resolution?)
 * By using “realistic” momentum/position smearing the performance is stable, no big effects
 * No need to increase the number of iterations to obtain better results
 * No systematic problems at low momentum

We could discuss about at the next SeeVogh meeting, of course.