This is my Qualification Task for ATLAS.
The progress is tracked on JIRA: https://its.cern.ch/jira/browse/ATLJETMET-765

Look at jet performance for for the Higgs to diphoton analyses.

1. Monte-Carlo based & in-situ jet energy scale calibration & resolution measurements.
2. Investigation of topological-cluster & particle-flow jet input algorithms.

The work-in-progress code is HGamJetStudy, a RootCore package for two studies:

1. MCJESR : Monte-Carlo based jet energy scale & resolution.
2. YYJetInSituJESR : (experimental) yy+jet in-situ jet energy scale & resolution.

The outputs are used to give us results (pretty plots):

1. MCJES → plotJES (working)
2. MCJES → plotJER (to do)
3. YYJetInSituJESR → plotYYJetInSituJESR (working)

Full code and instructions are hosted on GitLab: https://gitlab.cern.ch/tapark/HGamJetStudy

My working direcctory on LXPLUS:

/afs/cern.ch/work/t/tapark/public/

• HGam meeting (June 6th, 2017): Mis-calibration of jets in events with diphoton vertex selection

• Jet Calibration & Resolution meeting (May 24th, 2017): Investigation of jet pT response in MC H -> yy

• Hadronic Calibration Workshop 2016 (Sept. 18th, 2016): Particle Flow Jets for Pileup Suppression in Higgs Analyses

• ATLAS Canada Summer Students' Talk (Aug 11th, 2016): Optimizing Pileup Jet Supporession for H -> yy Analyses