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Ken Johns, Venkat Kaushik, Xiaowen Lei (U. Arizona)

Status and Plans for the Measurement of the Top Quark Production Cross Section in the Leptons plus Jets Channel. Ken Johns, Venkat Kaushik, Xiaowen Lei (U. Arizona). Status. Developed an ARA based framework for analyzing ESD, AOD, D2PD OR D3PD Add some details

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Ken Johns, Venkat Kaushik, Xiaowen Lei (U. Arizona)

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  1. Status and Plans for the Measurement of the Top Quark Production Cross Section in the Leptons plus Jets Channel Ken Johns, Venkat Kaushik, Xiaowen Lei (U. Arizona)

  2. Status • Developed an ARA based framework for analyzing ESD, AOD, D2PD OR D3PD • Add some details • Used 10 TeV Data and Monte Carlo samples to estimate the uncertainty of the top quark cross section using a top likelihood method • Participated in top group event by event validation excercises • Show a few results from Xiaowen • Streamlined machinery for calculating and fitting mock data with top likelihood

  3. Status • Helping to validate D2PD production • Venkat slides • Analyzing jet and MET performance using December 2009 data

  4. 900 GeV w MET-topo • METx and METy

  5. 900 GeV w MET-topo • MET and SumET

  6. 900 GeV w MET-topo • Phi

  7. 2 TeV w MET-topo • METx and METy

  8. 2 TeV w MET-topo • MET and SumET

  9. 900 GeV w w Akt4 Jets • Jet n and pt

  10. 900 GeV w Akt4 Jets • Jet eta and dPhi

  11. Plans • Optimize top likelihood for 7 TeV data • Monte Carlo samples not yet available • Variable optimization in progress including bjet tagging • Machinery for QCD background estimate being built • Begin searching for a top signal from Day 1 • Data samples will be small so ARA can be used before D2PD and D3PD samples are assembled • Continue studies of jet and MET performance

  12. Continue D2PD validation work • Verify top likelihood variables in D2PD

  13. Manpower • Faculty • Ken Johns • Postdocs • Venkat Kaushik plus some fraction of Peter Loch • Students • Xiaowen Lei • Graduating 12/10? Monte Carlo thesis using 7 TeV samples plus jet/MET performance studies using 7 TeV data • Finn O’Grady • 1’st year student

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