Particle ID

From GlueXWiki
Revision as of 12:25, 13 February 2015 by Pmatt (Talk | contribs) (Created page with "== Charged Tracks == * DChargedTrackHypothesis::position() returns the position of the track at its position of closest approach to the beamline. * DChargedTrackHypothesis::t1()...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Charged Tracks

  • DChargedTrackHypothesis::position() returns the position of the track at its position of closest approach to the beamline.
  • DChargedTrackHypothesis::t1() is the measured hit time of the BCAL/TOF/FCAL hit/shower, if present, that is matched to the track (if hits in multiple systems, order of preference is BCAL/TOF/FCAL).
    • If it is not matched to a hit, it's value is NaN (and the detector system is SYS_NULL).
  • DChargedTrackHypothesis::pathLength() returns the path length along the track from it's hit in the BCAL/TOF/FCAL to position().
  • DChargedTrackHypothesis::t0() is either:
    • The selected RF bunch time, if present, propagated to position().
    • The measured start counter hit time, if present, propagated to position().
    • If neither is available, it's value is NaN (and the detector system is SYS_NULL).

Neutral Showers