LappFullRun2DibosonAnalyses

LappDibosonAnalyses

The Run2 WZ analysis framework developed at LAPP

This analysis framework is based on EventLoop and has been developed at LAPP, primarily for the WZ diboson analysis of Run 2 data.

Main developers are:

  • Lucia Di Ciaccio: for all aspects related to truth in xAODs
  • Emmanuel Sauvan: main code structure, analysis classes
  • Elena Yatsenko: implementation of CP and trigger recommendations
  • Angela Burger: implementation of CP recommendations

LAPP Group SVN repository at CERN:

https://svnweb.cern.ch/trac/atlasinst/browser/Institutes/LAPP/DiBosonWZRun2/WZRunII

Our packages are put under Institutes/LAPP/DiBosonWZRun2/

Set-up analysis framework: (RootCore package WZRunII)

Prior to installation, make sure that you use bash shell at lyon. If it's not you default shell, you can just type > bash

In your home directory, check the file .bashrc If not existing, you can create one. Add in it


###--- set cern username
export CERN_USER=esauvan

###--- RootCore via CVMFS setup 
export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase
alias setupATLAS='source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh'


To have the modifications taken into account, re-open a new terminal or just do > source .bashrc

The analysis code should be installed on your home AFS directory. In a new directory do:


# 
#  Initial Setup for the WZRunII analysis
# 


#--- get the package
svn co "svn+ssh://$CERN_USER@svn.cern.ch/reps/atlasinst/Institutes/LAPP/DiBosonWZRun2/WZRunII/trunk" WZRunII


#--- Setup ATLAS and AnalysisBase
setupATLAS
rcSetup Base,2.4.18

#--- optional, to add more packages not in the release 
rc checkout WZRunII/scripts/additional_packages.txt
#---- copy presently missing data file for ElectronCharge  correction tool
cp /afs/in2p3.fr/home/s/sauvan/atlas/WZRun2/ElectronChargeCorrectionTool/data/charge_misid_rate_2016_02_24.root ./ElectronChargeCorrectionTool/data/


#--- Find and compile these packages
rc find_packages
rc clean
rc compile


To run a test:

cd WZRunII/run/
ZZCtrlRun run_testZZCtrl.par

(takes care of removing the output directory (e.g. "submitDir" if already existing (a feature of EventLoop which should maybe be a bit better handled later ...)

How To Run in batch

You can send the analysis on all data sample centrally stored on sps:

cd WZRunII/scripts
./Send_Prod anal_2016.par

You have to set in anal_2016.par the executable to run (full path for the moment) executable: /afs/in2p3.fr/home/s/sauvan/atlas/WZRun2/RootCoreBin/bin/x86_64-slc6-gcc49-opt/ZZCtrlRun (you have to change it according to your own directory)

and the output directory (it has to be created before) histo_dir: "/sps/atlas/s/sauvan/WZRun2_2016_Histos/19fb/"

Once the jobs are all finished, check the execution of jobs:

Once the jobs are all finished, check the execution of jobs:

Check_Prod anal_2016.par

then sum everything with

Sum_Histo sum_2016.py

In sum_2016.py you need to edit sumHisto.root = "/sps/atlas/s/sauvan/WZRun2_2016_Histos/19fb/" to the output directory set in anal_2016.par Merged histograms per physics process are then created at the top of this directory

To run the full analysis, latest version: Send_Prod anal_2016.par Check_Prod anal_2016.par Sum_Histo sum_2016.py

(Please take care of changing path inside these files)

Regular setup

Go in the installation directory and do:

setupATLAS
rcSetup 

Change Analysis release

rcSetup -u
rcSetup Base,2.4.18
rc find_packages
rc clean
rc compile

MarPlot : an automatised plotting program

A general plotting standalone code. (for the moment do not install it in the same base directory as the ROOTCORE installation of the analysis package)

#--- get the package
svn co "svn+ssh://$CERN_USER@svn.cern.ch/reps/atlasinst/Institutes/LAPP/DiBosonWZRun2/MarPlot/trunk" MarPlot

#--- compile it
cd cmt/
make -f Makefile.StandAlone

#--- run an example (Edit the output and maybe input directories in the steering file !)
cd run/
../bin/MarPlot draw_Run2_ZZCtrl_2016.par    #---- 

#--- visualize the result : go in the output directory
latex Summary; dvips -o Summary.ps Summary.dvi
evince Summary.ps

Structure of the WZ analysis framework

The structure defines an "Event" base class which which "load" and correct each xAOD event, and histograming+selection classes, to implement different selections using the centralised information from the Event class

  • LapPhysicsConstants : to gather-up all physics constants and units
  • LapRun : To manage running parameter and read input steering file
  • MarHistoManager : an old-fashion histo-manager added for convenience
Histograms are define using a separate steering file, for the moment in run/testhisto.par

  • LapxAODEvent : Base class for the Event. Should incorporate all xAOD corrections (trigger, SFs, particle calibration, mET calculation, etc ...)
  • WZxAODEvent : derived from LapxAODEvent. Incorporates event-based calculation specific to our WZ reco analysis (list of selected electrons, muons, etc ...)

  • WZxAODTruAnalysis : analysis class for truth studies. Also calculates truth quantities associated to each event. is linked to reco. level analysis classes.

  • util/ZZCtrlRun.cxx : executable
  • run/run_testZZCtrl.par : steering file for the executable
  • run/testInputFiles.inp : list of input xAOD files
  • run/testhistos.par : definition file for all sets of histograms associated to each analysis class. Read by MarHistoManager.

  • Another executable: util/WCRRun.cxx : for W+jets control region

Good practice to do commits:

In order to keep track of code changes made by everybody, please follow the procedure below for each commit of changes in the code.


svn status
svn update
svn add <new file> 
LappDibosonAnalyses 

Then edit the file ChangeLog with a short description of your modifications

 2015-11-05 - E. Sauvan
   + XXXAnalysis creation
        * Correct small bugs in ....

Finally do

svn commit

And copy paste the description added in ChangeLog in the editor window which opens

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