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Run 9 Dijet Detector-level/Particle-level Simu Comparisons

Updated on Fri, 2014-04-11 13:06. Originally created by ezarndt on 2014-04-11 12:42.
The following plots are from comparing detector-level simulation to particle-level simulation. First set of histograms are for all dijets, but then the next set show the same quantities broken into barrel-barrel, barrel-endcap, and endcap-endcap dijets.

Matching cut: Detector-level and particle-level jets had to be within a certain range of eta/phi in order to be included in the histograms below. (Events not passing sqrt((delta eta)^2+(delta phi)^2) < .5 were thrown out.)
 

Correlation plots




The plot above combines the correlation profiles for the barrel-barrel, barrel-endcap, and endcap-endcap dijet masses.

Dijet mass difference for each mass bin (I know this is a lot of plots; more succinct "summary plots" on the way)
Mass binning: {7,10,13,16,19,23,28,34,41,49,58,69,82,100} where
Bin 1 : 7 <= dijet mass < 10
Bin 2 : 10 <= dijet mass < 13
...
Bin 13 : 82 <= dijet mass < 100
Bin 14 : 100 <= dijet mass




The final plot combines all mass bins. (Bins 1 and 2 omitted as they are empty. Red is mass bin 3, orange is mass bin 4, .... gray is mass bin 13, black is mass bin 14.) Two things to point out here: 1. Similar to what we see in the correlation plots, the particle-level dijet mass diverges further from detector-level dijet mass as we look at larger mass bins. 2. This effect as a function of eta sum is

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