[Sane-analysis] Reminder of Sane meeting at 3:00pm Wed Jan 11th in L210A

[Oscar Rondon]

We had a productive meeting that cleared an important point about g2WW.
I checked the Accardi et. al. paper (JHEP 0911 (2009) 093) which
clarifies, as Whit and Zein-Eddine also pointed out, that the input to
g2WW needs to be leading twist g1_LT, not experimental g1, as discussed
in their fig. 1 bottom panel, where they show the difference in both
approaches. I was thinking that experimental g1 was the input.

I also checked that what I had requested Linda Stuart to calculate for
E143 was g2WW for finite (2Mx)^2/Q^2 > 0 (= 0 is the WW approximation),
which she did. I will scan and post her report on the SANE wiki. With
Linda's formula, the experimental g1 should work as input to g2WW.

This means that for the resonances, the d2 integrand of C-N integrals
cannot be calculated using g2bar, because there is no g1_LT for the
resonances to get g2WW. Maybe some g1_LT like LSS 2006 could be evolved
down to the HMS data's mean Q^2, as I believe Zein-Eddine mentioned, but
that would imply application of not just global, but local duality,
which doesn't work for g1. Even global duality works only above ~ 1.8
GeV^2. So HMS C-N integrals should be calculated with 2g1+3g2 only.

Next meeting will be next Wednesday 1/18 at 3:00 PM.

Cheers,

Oscar




Mark Jones wrote:
> Reminder of Sane meeting at 3:00pm Wed Jan 11th in L210A 
> 
> 
> https://bluejeans.com/240199984 
> 
> 
> Unfortunately I won't be at JLab again.
> I will try and call in.
> Oscar can chair the meeting with code 6720. 
> 
> 
> 
> Cheers, Mark
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