[Rgc_analysis] note on the extraction of pDVCS asymmetries

[pilleux at jlab.org]

Dear Tony,
The FC normalization between positive and negative helicities for the beam
gives a small correction. However, the FC information is also used here to
normalize events between the positively polarized and the negatively
polarized NH3 datasets, which have quite different statistics.
Best regards, Noémie.

> Noémie
>
> The program "FCup_reading.cc" reports FC asymmetries that are on the order
> of 0.001 in natural units.  Figures 16-18 show asymmetries that are on the
> order of 0.1.
>
> Why do the FC corrections shift the asymmetry so much when the FC
> asymmetry is so small?
>
> Tony
>
>
>
>> Dear all,
>> Please find attached a note I wrote on the preliminary DVCS results I
>> got
>> with the NH3 runs that were cooked, with the intent of asking the DPWG
>> for
>> a release in order to talk at SPIN. The first part relates to the
>> extraction of the target polarization and the second part to the
>> extraction of pDVCS asymmetries. I would be happy to take any feedback
>> into consideration !
>> Best regards, Noémie._______________________________________________
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>>
>
>
>