HHLooper

HHLooper

Setup

cmsrel CMSSW_9_4_2
cd CMSSW_9_4_2/src
cmsenv
git clone git@github.com:LPC-HH/HHLooper.git
cd HHLooper
make

About the looper:

All the selections are defined in app/HHLooper.cc in the cutflow object

cutflow.addCut: start a cut

cutflow.addCutToLastActiveCut: add a cut on top of the cut in the previous line

cutflow.getCut: get a cut in a cutflow

To define a cut in addCut or addCutToLastActiveCut, you need to give the cutname, a lambda function for a bool return, and a weight

For example, cut SRBin2 contains the following cutflow: CutWeight -> CutHLT -> CutfatJetsPt -> CutfatJetsMassSD -> SRBin2

All the output histograms are defined in app/HHLooper.cc in the histograms object

Each output histogram will have the name of CutName__HistogramName, i.e. by default the program saves all histograms for all cuts in the cut flow defined above

Run looper

./process.sh tag0 no nominal no no

The first argument is a tag for the folder name of the output histograms, and the second argument tells the program to include all the weight systematic Up/Down histograms, the third argument tells the program to run a specific shape systematic (reading a different branch in the ntuples. the systematics are JES_Up, JES_Down, JMR_Up, JMR_Down, JMS_Up, JMS_Down), then the next two arguments tells the programs to do trigsys, PNetSFsys or not. the trigsys is very time comsuming.

Command to run for the signal region

./run_syst_test.sh

cd python

./prepare_histogram_forcard.sh

Command to run for the ttbar one lepton CR

./process_1Lttbar.sh yield_AN_1Lttbar

Command to run for the ttbar two jet CR

./run_syst_ttbar_test.sh (including the recoil correction)

To remove the recoil correction, now comment Line 437, and uncomment Line 447 in ../app/HHLooper.cc to remove recoil correction;

make clean; make

source process_ttbar.sh yield_AN_ttbar no nominal no no

Make root file for datacard

cd python

The argument of the python script is the tag name you provided in the previous step

make plots

cd python

make prefit and postfit plots plots

make a soft link to the combine-hh directory where the fit fitDiagnostics files are located.

e.g.

ln -s /storage/af/user/nlu/work/HH/CMSSW_10_2_13/src/combine-hh .

Two things to changes:

1. Line 508: version number (e.g. vbdt = "v8p2_0830_newntuple_newrecoilcorr_PNetp9_Regressed"), the code will look for the output in

combine-hh/cards/"+vbdt+"/combined_cards_"+vbdt

2. upper limit of HH

Line 510:

HH_limit = 5.0;
    

Now ready to make the plots:

python makePostFitPlot_combined.py