[Sane-analysis] Minutes of August 10 Analysis Meeting

[Narbe Kalantarians]

_*Anusha:*_ Followed up on applying azimuthal corrections, using the 
suggested procedure:

1) Correct ytar with the slow-raster x and y offsets.
2) Correct for any correlation(s) between xptar and mass of final states 
W via azimuthal correction.
3) Fix any remaining offset in data/MC for xptar with slow-raster y offset.
4) As a check, see that there isn't any correlation between xptar and yptar.

Looking at perpendicular field runs (72783-72803). Sees improvement, but 
there remains some correlation between xptar and W.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Azimuthal_Angle_Correction_for_target_mag._field#Update_Azimuthal_angle_corrections_08.2F09.2F2011
Will look run by run, especially the beam offset, to see if this is 
constant or time dependent. Will also check parameters used in azimuthal 
correction.


_*Narbe:*_ Follow up to dilution factors for BETA. Found a mistake in 
the error calculation,  which was underestimating  them. Errors improve 
some, but still not sure if the functional form is correct. There are 
still some fluctuations in the dilution factors. This could be due 
either to the H2 not being accounted for correctly or the (mentioned) 
error calculations.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#08.2F10.2F2011
Still looking in to the details.


_*Luwani:*_ Looking at the neutral pion asymmetries using the more 
recent replay of Hovhannes' to compare with those  he obtained using the 
official-Octavian replay.


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

Next meeting will be August 17th at 3:30pm, JLab time.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/sane-analysis/attachments/20110811/ee070020/attachment.html