[Sane-analysis] Minutes of January 11 Analysis Meeting

[Narbe Kalantarians]

_*Narbe:*_ Did a study on the effect(s) of the acceptance Big-Cal block 
cuts for the data. Compared data to MC. Purpose of this is to help in 
the pion contribution study. There are some differences between the data 
and MC, which could be due to
1) better calibrations on the MC
2) (Cerenkov) mirror efficiencies
Will look at no field configuration to check. Also, planning on looking 
at NH3/C ratios for the pion contribution from nitrogen.

With corrected/updated MC prepared new dilution factors. These use the 
corrected/updated packing fractions that are done for the parallel. 
James will look at the asymmetries using these.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#01.2F11.2F2012


_*James:*_ Looking some more at the elastic radiative tail corrections. 
Seems to have the sign wrong, which could be due to a sign change in the 
RC code.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Radiative_Corrections#Small_Fixes:_1.2F11.2F2012


_*Anusha:*_ Updated asymmetries, for single arm electrons. The physics 
asymmetry is corrected for polarization, but not the (~50%) dilution.
https://userweb.jlab.org/~anusha/plots/asym/raw_phy_asym.gif

Posted draft of talk for the Hall C meeting on the 14th of this month. 
The pdf version is attached to this e-mail.
https://userweb.jlab.org/~anusha/HallC_2012.pptx


_*Hoyoung (01/12/12):*_ Redone packing fractions with updated/corrected 
MC/replay.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Packing_Fraction_using_pol_hms_single
https://hallcweb.jlab.org/experiments/sane/hykang/pf/20120112/
Mostly done, checking on a few (minor) details


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

Next meeting will be January 18th at 3:30pm (JLab time).







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