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:

• Collaboration Meeting (8.6.12): Parallel Session, Plenary Session
• Spin PWG Meeting (8.23.12): Spin sorting terminology
• Spin PWG Meeting (8.30.12): Run QA, Production Evaluation, Comparison to Run 9, Eta-dependent yields and background