Update 09.06.2018 -- Run 9 embedding: particle vs. detector level check (R = 0.2, 0.5)

One of the surprising about the unfolding results for R = 0.2 and 0.5 is how small the corrections are at high pTjet.  The corrections appear to be consistent with unity for pTjet > 5 GeV/c or so.  See:

https://drupal.star.bnl.gov/STAR/blog/dmawxc/update-08222018-run-9-pp-unfolding-different-response-pi0-and-gamma-triggers-r-02

https://drupal.star.bnl.gov/STAR/blog/dmawxc/update-09052018-run-9-pp-unfolding-results-pi0-and-gamma-triggers-r-05

Below compares the particle-level recoil jet spectrum from the Run9 dijet embedding sample (generated with Pythia6) to the corresponding detector-level recoil jet spectrum for charged-hadron triggers in a variety of eTtrg bins.  First the R = 0.2 jets:

In all 4 cases the corrections are (kind of) flat in pTjet, and average about 10% (for eTtrg = 9 - 20 GeV and eTtrg = 9 - 11 GeV) or about 20% (for eTtrg = 11 - 15 GeV and eTtrg = 15 - 20 GeV).  For R = 0.5:

There are substantial differences at low pTjet, but the corrections quickly approach unity and sort of level off at eTtrg ~ 5 GeV.  Above there, the corrections are between 10% and unity... (I Haven't split the R = 0.5 up into bins of eTtrg yet :/ ).