[Sane-analysis] Minutes of February 9 Analysis Meeting

[Narbe Kalantarians]

_*Hovhannes:*_ Did a write-up of his asymmetry calculations, focusing on 
how to handle the scaler information, especially pertaining to the 
perpendicular-field data. It seems that the perpendicular-filed data 
might need ot be treated somewhat differently than the parallel-field data.
http://www.jlab.org/~bhovik/SANE/Asymmetry.pdf
Will try these methods on parallel data for accidentals(outside of 
timing and no good Cerenkov), then look at ratio of reals to accidentals.


_*James:*_ Posted a copy of the seminar he gave at UNH this past Monday 
(Feb 7th). 
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Presentations_by_SANE_Collaborators#James_Maxwell
Made pictures/figures, relevant to target, to use for talks.
http://twist.phys.virginia.edu/~jdm2z/drawings/
Made tables of updated target polarizations with cuts on beam current 
(I_Beam > 50nA and 60nA). Sees a slight difference in between these 2 cuts.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Final_Target_Polarization#Current_cuts_at_50.2C_60_nA:_2.2F9.2F2011
Applied these cuts to the asymmetries. Though, the target polarization 
will get updated to the tables just mentioned.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Adding_Current_Cuts_to_Asymmetries:_2.2F9.2F2011


_*Anusha:*_ Made plots of xtar, xptar, ytar, yptar, and deltaP_HMS vs W. 
This was done with the MC she has been using. Doesn't see correlations 
as before. These seemed to be fro ma bug in her code that she corrected.
http://www.jlab.org/~anusha/targetquan_W2_hms.gif
http://www.jlab.org/~anusha/xptar_w_hms.gif
http://www.jlab.org/~anusha/targetquan_W1_hms.gif
Will compare with HMS data.


_*Narbe:*_ Updated on BETA dilution factors effort. The df is high for 
the W region near elastic, due to there being extra counts at low W. 
Working on figuring this out.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Packing_Fraction#02.2F09.2F2011
Will redo using bins from generated tables, as well as sort in to Q^2 bins.


_*Luwani:*_ Continuing to look at pi0 asymmetries for run#. Will add on 
the error-bars. Oscar mentioned that there could be correlations with 
the (inclusive)electron asymmetries.
http://www.jlab.org/~lzwano/pi0_asy.png 
Will look at the rates.


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

Next meeting will be February 16th 3:30pm JLab time.

 
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