[Sane-analysis] PANIC Abstract update

[Whitney R. Armstrong]

Here is an updated version.

http://quarks.temple.edu/~whit/SANE/talks/WArmstrong_PANIC2011.pdf



The Spin Asymmetries of the Nucleon Experiment (SANE)  measured the virtual
Compton scattering asymmetries, $A_1$ and $A_2$, which determine the spin
structure functions of the proton,  $g_1$ and $g_2$. The kinematics for
these measurements are  in a range of Bjorken $x$, $0.3 < x < 0.8$, where
extraction of the matrix element $d_2^p $ (an integral of $g_1$ and $g_2$
weighted by $x^2$) is most sensitive. The data was taken from $Q^2$ equal to
$2.5 GeV^2$ up to $6.5 GeV^2$. In this polarized electron scattering  off a
polarized proton target experiment, two double spin asymmetries,
$A_\parallel$ and $A_\perp$ were measured using the BETA (Big Electron
Telescope Array) Detector. BETA consists of a scintillator hodoscope, gas
Cherenkov, lucite hodoscope and a large array of lead glass detectors. We
will discuss the analysis of BETA data in addition to the motivating physics
of the proton's spin structure.
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