[Mott] The pedestal

[Timothy Gay]

Hey Dan,

Thanks for that quick work.

The second file seems to be locked or something - I can¹t read it.

So a (very) zeroth order statement about the data your analysis gives us
is that we should make the cut to eliminate everything below the abscissa
zero. This is slightly problematic for foil # 1 and quite problematic of
foil # 15, though.

In this regard, was the inelastic, monotonically-decreasing ³pedestal"
subtracted from the data before you calculated the asymmetries?  I¹m
surprised that the asymmetry generally falls for the one or two slices
just below the mean; this may be due to the pedestal.

Attached are the resources on Pade approximates that I have gotten from
the interweb; there are many more that seem qualitatively less useful.

Tim

 

On 10/28/15, 11:38 AM, "Daniel Moser" <moser at jlab.org> wrote:

>All,
>
>Attached are plots looking at asymmetry per foil, and at A_0 and lambda,
>in half-sigma slices of the energy spectra fit from -4 to +4 sigma. That
>is, the energy spectra gaussian fit was performed (after ToF-cut), then
>using the sigma from it, half-sigma slices from -4 to -3.5 sigma, -3.5 to
>-3 sigma, and so on, to 3.5 to 4 sigma, were looked at, calculating
>asymmetry for each slice. This was done for all ten foils used in Run2.
>The points for each slice lie in middle of the bounds, so the asymmetry
>for the 1.5 to 2 sigma slice sits at 1.75. Additionally, the first two
>plots look at A_0 and lambda's dependence on energy slice. A table with
>these values and the chi-squareds/NDF is also attached in a separate
>document. Some stuff to chew on in order to determine where to make our
>energy cuts. 
>
>Daniel 

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