20200831 sdobbs PID notes
From GlueXWiki
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)
- FCAL photon delta T resolution in data and MC is close, could be tuned a little more
- Colin
- 1% differences in pi+ BCAL delta t, pi- TOF delta
- 4% difference in proton TOF 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?
- maybe mostly affects baryon analyses?
- Need more 1D slice plots
- Foda
