[Clas12_rgh] [EXTERNAL] J12-24-RunGroupH (fwd)

[Marco Contalbrigo]

Dear all,
below are the questions I received from the reader.
This give us the opportunity to clarify some of the
TAC points. I will need your help to setup an
effective set of answers.
Bests, Marco.


---------- Forwarded message ----------
Date: Wed, 26 Jun 2024 02:39:35 +0000
From: "Aschenauer, Elke" <elke at bnl.gov>
To: Contalbrigo Marco <mcontalb at fe.infn.it>,
     Markus Diehl <markus.diehl at desy.de>, "ilieva at sc.edu" <ilieva at sc.edu>
Cc: "Aschenauer, Elke" <elke at bnl.gov>
Subject: J12-24-RunGroupH

Dear Marco,

as you most likely have imagined I have a couple of questions.
Before I ask more technical questions, I think it is crucial to to answer the comments from the TAC report as attached.
In addition to this.
I think we have in many past PACS made statements to the validity of a dimple SIDIS interpretation at JLab this becomes even more relevant as higher x becomes, can you please explain why this concern is not valid here.

Concerning the DVCS program, you know as well as I that we are not measuring a GPD, but CFFs, so can you please show how well you constrain the CFFs. Also the VGG model is really not anymore up-to-date the ePIC generator or any other modern exclusive DVCS generator should be used for future sensitivity studies. 
Also please show uncertainty bands for the theory simulations.

But most importantly I’m missing any discussion of systematic uncertainties for the different measurements, especially with the new experimental setup.

Thank you in advance giving this questions any consideration.

Cheers Elke





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