Build a FW (Boris and Matt are architects)

Requirements

• Don't want to get stuck in a corner (want to be as flexible as possible)
• Can have specific numbers to be transfered to UCSD
• Use RECO data format
• learn how to skim/reduce
  1. drop/keep branches
  2. selections
  3. specific elements/subset of a collection

Proposed

• Don't reproduce dataformats -- use existing Events trees and dataformats
  1. drop/keep collections as needed
  2. append events with out own information/datatypes
  3. can do looping with FWLite tools (e.g getByLabel(...))
• can view events in event display
• perhaps inplement/use an event bit tag

Questions

• What is required to be kept to re-reco events?
• Alignment/Calibration issues -- require to rerun from RAW
• What datasets are we going to use?
• Trigger rates?
• re-use tag-n-probe methods from CMSSW

Exercise

Reading Assignments

1. With what precision can track reconstruction be measured with the Z → 2e, 2μ (vs p_T, vs η)? (Boris, Matt, Ryan)
2. With what precision can missing ET be measured (vs η) (Boris)
3. With what precision can track parameters be measured: d0, Z0 Vs p_T & vs η (Boris, Ryan)
4. distribution of Z + njets (needs def of jet) (Ryan, Vivek)
5. Isolation
   1. lepton isolation implementation (Matt, Adish)
   2. lepton efficiency vs η (Riccardo)
6. electron I.D. efficiency vs p_T, η (Riccardo)
7. efficiency measure using standardized tag-n-probe (Riccardo, Matt)
8. primary vertex reconstruction and comparison with Z → 2l vertex (Ryan)
9. momentum scale measurement
10. study EWK twiki to see what activities are being reported there
11. fitting Z → 2l line shape (Riccardo, Adish, Vivek)
12. Trigger implementation (Riccardo)
13. Implement MHT (Matt)

-- RyanKelley - 2009/04/21