IPChi2 discrepancy with HLT2
IP\chi^2 discrepancy between HLT1 and HLT2 is non-negligible. Attached is a 2D plot of IP\chi^2 from HLT1 and HLT2 baseline.
The full source is not clear.
Should improve agreeability as much as possible.
Maybe use a different variable for selections?
to do list for demystifying:
-
Improve scattering !735 (merged) -
Compute efficiencies at IP \chi^24, 9, 16 for both HLT1 and HLT2 in bins of pT to see the effect for selections -
Make a comparison for true B and Charm events. -
Look at the step by step computation of IP \chi^2