[Sane-analysis] Minutes of April 6 Analysis Meeting

[Narbe Kalantarians]

Regarding Oscar's study, a corrected/updated version of his note is 
posted in his directory
http://twist.phys.virginia.edu/~or/sane/analysis/charge_a/false_A_5.9-80_d.pdf


Narbe Kalantarians wrote:
>
> _*Hovhannes:*_ Posted a draft of his talk on SANE to be given at the 
> DIS conference next week.
> https://wiki.bnl.gov/conferences/index.php/DIS-2011
> He'll welcome any questions/comments.
> http://www.jlab.org/~bhovik/SANE/TalkDIS2011.pdf
>
>
> _*James:*_ Began a table listing runs to be used for analysis. The 
> format is logic-style. Adding runs as they get replayed. Using 
> gscalers 510 and 538 for the live-time. Will switch to the 
> 510*(513+514)/505 as determined by Hovhannes. 
> https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Scaler_information
> https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Good_Runs_for_Analysis#New_Version
> Will add a column for number of events and also one for comments.
> Starting to work on radiative tail with Karl.
>
>
> _*Oscar:*_ Did a study of the false asymmetries. Referring to James' 
> study where he swapped the definitions for charge-normalization  
> (https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Charge_Normalization_Switch:_3.2F30.2F2011)
> Mark looked further in to this and found that this can't really be 
> done because it produces an inconsistency int the labeling. Using 
> Mark's model for the live-time. Posted the spread-sheet in the same 
> directory where his note is posted.
> http://twist.phys.virginia.edu/~or/sane/analysis/charge_a/false_A_5.9-80_c.pdf
>
>
> _*Luwani:*_ Plotted asymmetries for neutral pions with P_Beam*P_Targ. 
> There seems ot be a dependence on P_Beam*P_Targ, similar to what is 
> being seen for the physics asymmetries.
> https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Pi0_Asymmetry_with_beam_and_target_polarization
> Also plotted asymmetries with charge-normalization.
> https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Pi0_Asymmetry_with_charge_normalization
> Will plot pi0 asymmetries with both of these corrections together, and 
> try grouping P_Beam*P_Targ by average.
>
>
> _*Narbe:*_ Set the SANE GEANT to have outside liquid helium on the 
> edges of the target cup. Got this working shortly before the meeting 
> and running the MC to get statistics to check for effect on dilution 
> factors.
> Began using Peter Bosted's radiative corrections code for the BETA 
> kinematics.
>
>
> As always, please let me know if I missed anything or if I made any 
> mistake(s).
>
> Next meeting will be April 13, 3:30pm JLab time.
>

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