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First version of modified PrVeloUT

Michel De Cian requested to merge decianm-PrVeloUTUpdates into master

First version of modified PrVeloUT. Changes:

  • New "final fit" method with improved uncertainties for the magnet point, and a chi2 calculation, yield a much more accurate chi2 and a better momentum estimate.
  • Fiducial cuts that reject tracks at the edge of the acceptance
  • A cut on the final momentum and pT
  • A linear discriminant, using the new chi2, to fight ghosts

@sstahl @jihu @chasse

See here for more details: https://indico.cern.ch/event/786084/contributions/3326577/attachments/1800737/2937077/20190213_forward.pdf

Edited by Marco Cattaneo

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