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PMCS: Z->ee channel. Conclusion.

PMCS: Z->ee channel. Conclusion. Peter Renkel and Bob Kehoe from SMU. Want to tune pmcs for the top group. What was done. Etmiss looked horrible. First concern. Go to the channel with no real missing energy – Z->ee Also, some problems with jet pts.

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PMCS: Z->ee channel. Conclusion.

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  1. PMCS: Z->ee channel. Conclusion. Peter Renkel and Bob Kehoe from SMU

  2. Want to tune pmcs for the top group.What was done. • Etmiss looked horrible. First concern. Go to the channel with no real missing energy – Z->ee • Also, some problems with jet pts. • Angle distributions for the jets and leptons looked fine! • Etmiss: • Fixed a bug: before fixing no correction for Etmiss due to the jets. • Implemented jet efficiency: before fixing efficiency of 100% for the jets was assumed. • Took into account soft recoil by degrading it and smearing. • Jets and electrons spectrum was fixed because of jet efficiency.

  3. Cuts. • Require at least two jets with pt>20GeV and abs(eta)<2.5 • Require exactly two electrons with pt>15GeV and abs(eta_detector)<1.1 or 1.5<abs(eta_detector)<2.5

  4. 1. Nothing 2. Bug fixed Etmiss Etmiss

  5. 4. Combined method (+recoil) 3. Jet Efficiency Etmiss Etmiss

  6. Leading jet pt Next to leading jet pt pt pt

  7. Leading electron pt Next to leading electron pt pt pt

  8. Plans. • Get suggestions. Does this look fine? • Generate other bgs and check them. Must be fine, since generated missing energy is higher for other bgs. We hope (don't forget about Merfi's low:). • Be ready for the next week to give bgs to Jeff for using them in the analysis.

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