Presentations:

Jordan: "Sherpa vs Pythia vs Madgraph" 2011-05-18 MonoPhoton meeting

SM generator comparison Zgamma

Common generator selections:

• Photon Pt> 30 GeV
• |eta|<10
• ...

Sherpa, Baur, MadGraph, Pythia comparison

Distributions to be compared:

• Photon Pt, eta, phi
• dR, dPhi, dEta wrt Jet
• MET
• acceptance

aTGC generator comparison

LO Sherpa vs Baur

Cross-check. SM-like set of variables.

NLO Baur

K-factors

Modeling of the aTGC

Aproaches for aTGC limits

Three models so far:

• Repeat 2010 CMS Vgamma: 9 points
• D0 like : many aTGC points
• Scaling the existing SM to aTGC

Tools for aTGC limits

• aTGCRooStats

Systematics

Various

aTGC values

Schema with form factors:
Zgammagamma:

• Lambda = 1.5 GeV (Tevatron like), ...
• h30gamma = -0.015, 0, 0.015
• h40gamma = -0.004, 0, 0.004
• UNITARIZATION_N = 3(h3), 4(h4), X(h3,h4)

ZZgamma:

• Lambda = 1.5 GeV (Tevatron like), ...
• h30Z = -0.015, 0, 0.015
• h40Z = -0.004, 0, 0.004
• UNITARIZATION_N = 3(h3), 4(h4), X(h3,h4)

FastSim vs FullSim comparison

Make sure that they give consistent results, than can use FastSim

Production frameworks

Need robust production framework. May need to re-run it several times (~10).
Sherpa:

• instructions
• code location:
• data cards
• produced files location

Baur (LO):

• instructions
• code location:
• data cards
• produced files location

working project tested on LPC that generates BAUR fastsim: /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/

step 1: create LHE files, create list of coupling, parse the values to the card files and launch N jobs to create LHE files for each cardfile.

cd /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/cardfile
python generateCouplings.py
generateZZgInv.py
cd /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/
python submitJobs.py

step 2: convert LHE to ROOT:

cd /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/RECO
python make_lheToROOT.py
source makeRoot.sh

step3: run FASTSIM

cd /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/RECO
python make_rootToFastSim.py
python submitJobs.py

info: cardfiles at /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/cardfiles/ZZgInv

FASTSIM samples should be (jobs running now) at /uscms_data/d2/iraklis/VgAnalysis/Baur_Zgamma_LO385/src/OUTPUT/ZZg/RECO/

Common plots conventions

Common plots form - for easier comparison:

• Photon Pt: 0-500 GeV, 1GeV/bin
• Eta: -3,3, 0.1/bin
• Phi: 0,6.3, 0.1/bin
• MET: 0-500 GeV, 1GeV/bin
• ...

Plots in root files with histograms: ...
Script for the comparison:...

Useful links

Monophoton twiki
VGamma2011 twiki
VGammaFirstPaper twiki