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Twist correction notes, pp2009

The twist correction has been detailed in STAR notes and in blog entries (see Eric Hjort and Gene Van Buren's blogs).

2010 BTOW REPAIRS

Here is a summary of the repairs to BTOW during September and October of 2009.

1) Examine 4 sources of data to find problems:

notes on W systematic uncertainties

Run 9 T0 differences between fields

T0-by-padrow calibrations were performed for Run 9 using run 10118050 for RFF and run 10184053 for FF.

Some geometry tests

Method:

 

Kinematics of W production

Kinematics of W production

DCA resolution - run 7

  1.  minbias : detail per day

Final APS W abstracts

a) Jan Balewski: Submitted to E14a

b) Justin Stevens: Submitted to E14a

c) Ross Corliss: Submitted to F16

d) Bernd Surrow: Submitted to F1

Looking at non-gaussianity in the vernier scan

 The basic issue is that the vernier scan fit doesn't seem to agree with the rough calculation that comes from using the rates from the trigger details page.

W analysis task list (October 22, 2009)

W analysis task list 

Note: Most recent version: W-analysis-tasks.pdf