[Sane-analysis] Update: SANE A_para, A_perp models

[O. A. Rondon]

I have updated the plots of the SANE parameterizations of A_parallel and
A_perp from the A1 and A2 models used for the proposal.

https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Proposal%27s_model_Aparallel%2C_A80_asymmetries

The A1 model is quite reliable, but A2 is largely speculation, based on
very few SLAC data at generally higher Q^2 for the same x (RSS results
were not yet available at the time SANE was proposed). Therefore, the
A_parallel curves are reasonably realistic, but the A_perp are less
reliable.

The plot is from the SANE GEANT simulation using 6 GeV and 4.8 GeV beam
energies, so it integrates over all angles contributing to the same
x-Q^2 bin. The Q^2 bins are +/- 0.5 GeV^2 wide, centered at mean Q^2 of
3, 4, 5, and 6 GeV^2. The curves approximate the color codes used in
Hovhannes's asymmetry plots.

Cheers,

Oscar