This is a follow-up to yesterday's post:

https://drupal.star.bnl.gov/STAR/blog/dmawxc/update-02222018-run-9-pp-efficiency-using-stmumctracks

There I intended to gauge the effect of requiring 'idTruth > 0' (indicating that the detector level track in question was successfully matched to a generated particle).  However, I changed the numerator of the ratio between having no requirement on 'idTruth' (the left panel of the 1st plot in the link above) and requiring 'idTruth > 0' (the right panel of the 1st plot).  In the former case, the numerator was all charged particles which fell inside of our acceptance (pTtrk > 0.2 GeV/c and |eta| < 1) that were stored in the '*.geant.root' files.  While in the latter case, the numerator was all particles which fell inside of our acceptance that were stored in the 'StMuMcTrack' branch of the MuDst.

I redid the calculation now requiring that 'idTruth > 0' for the detector level tracks, and using the charged particles stored in the '*.geant.root' file as my numerator.  The effect of requiring a match on the efficiency can be seen in the two plots below.  The numerator is the same in all cases.