[Clas_hadron] [EXTERNAL] Permission for CLAS12 graphs usage

[silvia at jlab.org]

Dear Letterio,
I have not understood what the context of the presentation will be. Is it
a conference or just an internal presentation in your group?
In either case, I have some questions about how the plots in slide 3 are
defined.
1) Is there a cut around the pi0 mass on the gammagamma invariant mass
before plotting the middle plot? I am surprised by how small the proton
"bump" is.
2) What are the kinematic selections done to improve the plot that you
mention?
3) Any idea of why the proton peak is shifted from the nominal position?
Are these EC or FT photons (or both)?
4) What is the low-mass peak in the gammagamma invariant mass plot? Have
you applied any minimal-energy cut on the photons?
Thank you very much!
Best regards,
Silvia


>
> Dear all,
>
> I used some graphs from my CLAS12 analysis in a presentation for Annalisa.
> The pictures are preliminar, and this results are not published yet.
> Can i ask you the permission to use them? (Slide 3 in the attached pdf)
>
> Cheers,
> Lelio
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