[Rgc_analysis] [EXTERNAL] Pt for ND3 runs 16889 to 16935

[Sebastian Kuhn]

Hi Gregory,

thanks for keeping us up to date. Yes, this is a good place to post your results; however, I’m not sure whether Harut is subscribed, so I cc’d him just to be sure.
We won’t have an analysis meeting tomorrow, where we normally would present results like yours. But it is helpful to have information exchange between all the different groups trying to work out the “true” target polarization. Unfortunately, we have a wide spread - from over 40% (Noemie) to 0 (online, beam charge asymmetry - corrected trigger-based). Yours is somewhere between the latter in Harut - see
https://userweb.jlab.org/~avakian/tmp/all-rgc-run-dep-16885-16947.nd3.pdf
It would be very useful if Harut could give you access to his numerical values, so you can plot them together with yours (including the NMR results). As I said before, there is something wrong with the way we treat the FCup weights - they should make the curve more SMOOTH, not more ragged. It looks like your results continue to be consistently lower than Harut’s - I believe this must be due to either
- different cuts (you already asked Harut to check your raw numbers vs. his)
- different dilution factors
- Different D(y) vs. D(eps, E’)
- Different models for A1d.

For starters, could we get a direct comparison of EACH of your A1d_theory for each x-bin, weighed-averaged in your case over the Q2 range for each x  with the number of data points as weights.

Thanks - Sebastian

On Sep 12, 2022, at 12:17 PM, Gregory Matousek <gregory.matousek at duke.edu<mailto:gregory.matousek at duke.edu>> wrote:

Hello all,

Here are my target polarizations for the above listed run range. These were extracted using Sebastian's x-Q2 binning of the inclusive e'X A_LL asymmetries. I didn't know if this would be the best location for reporting my Pt extractions, so let me know if somewhere may be better.

 You can find the dataset in my work directory, along with others (see slideshow for details)

Best,
Gregory
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