| Version 19 (modified by , 7 years ago) ( diff ) |
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The first MadAnalysis 5 workshop on LHC recasting @ Korea
Analysis 5: CMS-EXO16-052
| Students | Jeon Dajeong (djeon@…) , Kim Seulgi (pikachu602@…), Lee Sang Man(daniel.s.lee4@…), Watson Ian James (ian.james.watson@…) |
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| Supervisor(s) | Sam Bein, Jory Sonneveld |
1. Analysis summary
2l+MET
2. Analysis global information
- CMS contact person: Nicholas Charles Smith
- Center of mass energy: 13 TeV
- Integrated luminosity: 35.9 fb−1
- Link to arXiv: none
- Link to the collaboration page: http://cms-results.web.cern.ch/cms-results/public-results/preliminary-results/EXO-16-052/
- Link to CDS: http://cds.cern.ch/record/2264690?ln=en
- Link to Inspire: http://inspirehep.net/record/1599663
- Other useful links...
https://github.com/cms-sw/genproductions/tree/master/python/ThirteenTeV
3. Selection description
3.1 Trigger selection
PS: This part cannot usually be described by the fast-simulation of detector.
3.2 Object definition
3.2 Object definition
- Electrons
p_{T} > 20 GeV, |eta| < 2.4 Medium ID - for Z PFiso04
- Muons
p_{T} > 20 GeV, |eta| < 2.4 Loose ID PFiso04 < 0.15
- Jets
p_{T} > 20 GeV, |eta| < 5 (PFloose ID) identified leptons in {delta}R < 0.4 disregarded We categorize the selected events based on the number of selected jets with 343 pT > 30 GeV for the corresponding requirements
- b-jets
P_{T} > 20 GeV, |eta| < 2.4 CSVv2>0.8484 (medium)
- Taus
p_{T} > 18 GeV, |eta| < 2.3 DecayModeFinding Loose isolation < 5GeV
- MET
Type-1 corrections are applied
3.3 Cut-flow chart
Event Selection:
- Two same flavored lepton with opposite electric charge ( that pass lepton selection?)
- el[0] pt > 25 and el[1] pt >20
- mu[0] pt > 20 and mu[1] pt > 20
- dilep m = 91.1876( +- 0.0021) +- 15
- dilep pt > 60
- events having more than one jet with pT > 30 GeV - remove
- b-tagged jet Veto : at least one bjet pt > 20, |eta| < 2.4 - remove
- if el[2 onwards] pt > 10 -remove
- if mu[2 onwards] pt > 5 -remove
- if tau pt >18 - remove
Optimization:
- For each possible set of selections the full analysis, including the estimation of backgrounds from control samples in data and the systematic uncertainties, is repeated.
After optimization:
- MET > 100
- Delta phi ( dilep.pt , ptmiss) > 2.6 rad
- |MET - dilep.pt| / dilep.pt < 0.4
If event has one jet:
- Delta phi (jet.pt , ptmiss ) > 0.5
- Delta R(ll) < 1.8
3.4 Definition of exotic observables
Like SUSY transverse observable. Notice that classical MT2 & MT2W are encoded within the MadAnalysis framework.
3. Detector simulation
Can we use the last release of the Delphes package with the CMS/ATLAS MA5tune-card? or do need to improve the simulation?
4. Validation material
4.1 Monte-Carlo samples
- LO/NLO?
- Model used:
- MC generator program (name + version):
- Shower program (name + version):
- Tune of Pythia:
- PDF set:
- ME/PS merging????
