[Sane-analysis] Minutes of March 2nd Analysis Meeting

[Narbe Kalantarians]

_*James:*_ Follow up on azimuthal-phi vs scattering-theta cuts. Looked 
at 4.7GeV perpendicular-field data. Placed cuts on cluster energy  
(0.5<E<1GeV, E>1GeV) and varying Cerenkov cuts. The Cerenkov cuts seem 
to have an effect on the distributions.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Phi_vs._Theta_with_Different_Cuts:_3.2F2.2F2011
Update to varying the standard cuts for the asymmetries. Corrected table 
of previous errors.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Permutations_on_the_Standard_Cuts:_2.2F23.2F2011



_*Whit:*_ Looked at dependence of Cerenkov vs. number of clusters 
chosen. Using a different clustering algorithm. Can see how the mirrors 
were performing. Plots of counts vs. # of photo-electrons show how much 
populating is from each nth cluster.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Whit#Cherenkov_vs_Cluster_Number


_*Anusha:*_ Looking at azimuthal correction for target magnet field. 
This is to correct for the observed xptar correlation with invariant 
mass of final states W. Assuming only forward direction corrections on 
MC and trying to have similar correlation on xptar vs W for the MC.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Azimuthal_Angle_Correction_for_target_mag._field


_*Luwani:*_ Follow up on pi0 asymmetries. Including more 
runs/statistics. Correcting for Pol_Beam*Pol_Targ. Also looking at 
yields and rates. The rates seem to have moved lower and higher over time.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Wednesday_Mar-02,_2001


_*Hoyoung(03/03/11):*_ Making progress on packing fractions. Sees some 
discrepancies in comparing data(4.7GeV perp run 72828) to MC, mostly 
regarding P_HMS and delta_P. Will try isolating region of W where the 
dat/MC agreement is reasonable.
http://www.jlab.org/~hykang/pf/20110303/


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

Next meeting will be March 9th 3:30pm JLab time.




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