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The first MadAnalysis 5 workshop on LHC recasting @ Korea
Analysis 8: ATL-PHYS-PROC-2O16-117
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| Supervisor(s) | Eric Conte | Benjamin Fuks |
1. Analysis summary
A measurement of the tt¯Z and tt¯W production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton-proton collisions at s√=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb−1. The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σtt¯Z=0.9±0.3 pb and σtt¯W=1.5±0.8 pb, in agreement with the Standard Model predictions.
2. Analysis global information
- ATLAS contact person:
- Center of mass energy:
- Integrated luminosity:
- Link to arXiv: https://arxiv.org/abs/1609.01599
- Link to the collaboration page: https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-22/
- Link to CDS: https://cds.cern.ch/record/2211022?ln=fr
- Link to Inspire: http://inspirehep.net/record/1485353
- Link to Rivet analyses: https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2016-005/
3. Selection description
3.1 Trigger selection
PS: This part cannot usually be described by the fast-simulation of detector.
3.2 Object definition
Explained here how the objects are defined.
3.3 Cut-flow chart
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????
4.2 Reference plots / cut-flows
- List of validation material
