VBF%20H?tt%20report

1
VBF H?tt report

• Catalin Tony
• April 24, 2007

2
Default-LVL2 rates

• Monika Wielers pointed us to AOD-gtntuple example
• Works in 12.0.6, needs modifications for earlier
  versions
• So we moved to 12.0.6. Will need the AODs for
  dijet and Higgs
• In the meantime, Francesca Sarri pointed us to
  her own ntuples, which have only a fraction of
  the trigger information
• These variables seem sufficient for a manual
  implementation of the LVL1/LVL2/EF requirements.
• Coding the LVL2-FTK requirements in progress,
  but not working quite yet.
• For the next meeting we plan to
• Transport our tracking req. code to the new
  ntuple environment, and
• get signal and background AODs and run athena
  to get official-style ntuples. Larger in size but
  also more complete.

3
Very preliminary results

• Dijet samples
• J0 5009 sample (dijet pT range 8-17 GeV) 115000
  evts.
• J1 5010 sample (dijet pT range 17-35 GeV)
  270000 evts.
• J2 5011 sample (dijet pT range 35-70 GeV) 6000
  evts.
• J3 5012 sample (dijet pT range 70-140 GeV) 9630
  evts.
• Francesca does not have the dijet trigger rates
  in her talk, but rather points to a TP talk by
  Eric Torrence
• http//indico.cern.ch/getFile.py/access?contribId
  142ampsessionId0ampresId0ampmaterialIdsli
  desampconfId12404
• Comparison to Erics values for single tau15i
  trigger shows 10-20 smaller L1/L2/EF rates

Sample LVL1 LVL2 EF
J0 642 238 62
J1 741 276 71
J2 307 85 23
J3 26 6 2
Sum 1716 605 158