UHHAnalysis/ZprimeAnalysis — pull request #11 by xerxes1986 (2014-05-07 21:40:49+00:00)
Title: Updating theta analysis file

I've done some checks for the number of entries in the histograms for the theta_input.root file and I see that there is a severe lack of statistics in the toptag categores for:

wc
wb
wlight
zlight
singletop
diboson

There are also very low statistics in the nontoptag zlight matching and scale systematics.

Therefore I have determined that the shape systematics for these channels should not be used. Instead, I calculate a flat systematic for all of the channels by looking at the change to the event yields after the kinematic selection, but before Chi2 or category splitting.

One thing that I am unsure about is the treatment of the toptagefficiency systematic since the shift on this is basically none ( the ratio of integrals is 1.00000). Should I uncomment the lines that show there is no uncertainty for this systematic on those channels? If you have a toptageff systematic on channel A do you also need it on channel B?