Difference between revisions of "20200831 sdobbs PID notes"

From GlueXWiki
Jump to: navigation, search
(Created page with "Here are some suggestions / thoughts from the current studies * '''Mahmoud''' ** FCAL photon delta T resolution in data and MC is close, could be tuned a little more *** tail...")
(No difference)

Revision as of 23:01, 31 August 2020

Here are some suggestions / thoughts from the current studies

  • Mahmoud
    • FCAL photon delta T resolution in data and MC is close, could be tuned a little more
      • tail to negative delta T in data not modeled in MC. would be interesting to understand this more
      • possible change to default cuts - increase to +- 2.0 ns. looks like this should be fine for all-neutral final states. maybe not for those with charged particles?
    • BCAL photon delta T has shower energy dependence not modeled in MC - cuts are really loose, so this doesn't matter (yet)
    • missing mass resolution slightly different in data and MC. due to photon energy or proton momentum resolution (previous studies suggest the latter is the problem)
  • Colin
    • 1% differences in pi+ BCAL delta t, pi- TOF delta
    • 4% difference in proton BCAL delta t - at low momentum, a delta T cut of +-0.6 ns is clearly too tight, maybe +-1.0, 1.5 ns at the lowest bin?
      • Need more 1D slice plots