[Sane-analysis] Minutes of August 3 Analysis Meeting

Narbe Kalantarians narbe at jlab.org
Thu Aug 4 08:53:11 EDT 2011


_*Narbe:*_ Updated kinematics binning tables using Jonathan's latest E' 
resolution result.

Looking at some dilution factors with the radiative corrections applied. 
Seem reasonable.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#08.2F03.2F2011
Will check some final details before redoing dilution factors overall 
and will also produce dilution factors in x_Bj bins.

_*James:*_ Comparing physics asymmetries using raw asymmetries from 
Octavian(older) and the Lacie RAID-disk (more recent, done on the batch 
farm). The perpendicular asymmetries seem fairly consistent, but the 
parallel asymmetries are noticeable different.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Binned_Asymmetries#Comparing_New_Lacie_Replay:_8.2F2.2F2011
Will check to see if using same files (and no Carbon runs) and also if 
using same prescriptions

Applying elastic radiative tail correction to asymmetries.  Seem to be 
working as they should.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Radiative_Corrections#Applying_Rad_Tail:_8.2F3.2F2011


_*Hovhannes:*_ Looked at parallel physics asymmetries using raw 
asymmetries from Lacie RAID-disk. Gets results more similar to James' 
results with the raw asymmetries from Octavian.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/A180


_*Oscar:*_ Also comparing physics asymmetries between those using the 
raw asymmetries from Octavian and the Lacie RAID-disk. Plotted in units 
of standard deviation. The physics asymmetries differ by a considerable 
amount.
https://hallcweb.jlab.org/experiments/sane/rondon/analysis/asym/final-raw_apara_lacie-octavian.pdf


_*Anusha:*_ Update on slow-raster offsets. Originally using slow raster 
offsets determined using 4.73 GeV data. But sees that it doesn't work 
quite as well for the 5.89 GeV data.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/C_runs_with_Parallel_Field_ON#Check_with_5_pass_C_run
Will try a procedure of
1) Correct ytar with the slow-raster x and y offsets.
2) Correct for any correlation(s) between xptar and mass of final states 
W via azimuthal correction.
3) Fix any remaining offset in data/MC for xptar with slow-raster y offset.
4) As a check, see that there isn't any correlation between xptar and yptar.


As always, please let me know if I missed anything or if I made any 
mistake(s).

Next meeting will be August 10 at 3:30pm JLab time.


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