[Sane-analysis] Minutes of February 16 Analysis Meeting

[Narbe Kalantarians]

_*Narbe:*_ Updated kinematic binning tables, using both Jon's results 
for energy resolution.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#02.2F16.2F2011
As well as a a best-estimate
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#02.2F15.2F2011
Added Q^2=2[GeV^2] to the recent tables.
Looking at dilution factors. Weighting by cross-section.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Packing_Fraction#02.2F16.2F2011
Weighting by cross-section only is not sufficient; needs to include 
luminosity as well. Working on this.


_*James:*_ Updated asymmetries with target polarization tables using 
beam current lower bound cuts (>60nA).
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Adding_Current_Cuts_to_Asymmetries:_2.2F9.2F2011
Accounting for HWP in charge normalization. This is not necessary. HWP 
only needs to be taken in to account with the beam polarization.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#HWP_charge_normalization:_2.2F14.2F2011
Looking at possible dependence of asymmetries on azimuthal angle of 
scattered electron. Doesn't see a dependence for 4.7 GeV perpendicular 
case.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Looking_at_Cuts_in_Phi:_2.2F16.2F2011


_*Luwani:*_ Looking at neutral pions asymmetry.Adding more 
runs/statistics as they get replayed.
http://www.jlab.org/~lzwano/pi0_asymmetry_run%23.pdf
Will look at them normalized by charge and live-time, and also at the 
yields.


_*Whit:*_ Made parallel-coordinate plots for ntuple variables pertaining 
to the detectors. This is to map correlations of the variables and cuts 
placed on them. Will be useful in comparing data and MC.
http://quarks.temple.edu/~whit/SANE/talks/plots/cluster_2_16_11.pdf


_*Hoyoung (02/17/11):*_ Looking at packing fractions. Found mystery of 
packing fractions not matching for some of the runs using the same 
target loads/cups. Some of the runs weren't getting replayed completely. 
They seem to be consistent now.
Seeing some mismatch in comparing data and MC. Using E_beam and P_HMS 
from logbook. Will use numbers in scaler files.  Could also use beam 
energies from the beam polarization tables.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang#2011.2F02.2F17
Studying what happens with cuts on slow raster.


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

Next meeting will be February 23rd 3:30pm JLab time.


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