11 Preliminary Result Documentation

Last Update 8.29.12

 

On this page we will collect documentation for the preliminary result planned to be released for DNP/QCD N'.  It will evolve as we results become available.

 

Task list (with links for completed):

  1.  Run QA
  2.  Define spin sorting computation for eta dependent AL
  3.  Evaluation of TPC calibration from P12ic production
  4.  Eta-sliced movies for barrel W, endcap W, and Z algos ( labeled dataB, dataE, and dataZ, respectively): Data { 2012, 2011, 2009 } and for MC { W+, W-, Zee, filtered QCD }
  5.  Comparison plots data/MC  for selected observables 
  6. Compute background fractions : 2nd Endcap QCD,  Z->ee,    W->tau->e
  7. Compute mean eta for each AL point
  8. Compute polarized background asymmetries from theory
  9. RHIC polarization:
    1. get tables for our fills
    2. DROP IT: etimate potential FOM improvement using # of reco events per fills
  10.  Produce AL(eta) from Run 12 data
  11. Vary algo cuts to maximize AL-signal/background:
    1. disable events with electron recorded in the last barrel eta bin and first endcap eta bin
    2.  endcap Ws 
      1. move ET cut  between 20-25 GeV
      2. change 2x2/4x4 isolation cut to  2x1/3x4  
      3. do sector dependent offset in Q/PT charge discrimination using WB data to find how much to move - should increase WE yield for spin sorting.
      4. suppress QCD background by
        1. narrowing Q/Pt date to form a banna-shape
        2. select TPC de/dx to be 1 MIP  , for simu QCD there is 50/50 for double MIP response 
  12.  Investigate systematics 
  13. Stability of AL vs data selection:
    1. divide data vs. ZDC rate
    2. divide data vs. fill pol pattern
    3. QCD sample w/ isolated electron or photon: ET>25, flip away side veto

 

Presentations: