Hi Yoshitaka,

I agree on-time abstracts should be given priority and it does sound like your group is quite full -- we have space, but I had wanted to check with you first because of the topic. It also connects to our WG (they also make predictions for low-x and it includes VM-production), so I think it would be fine there, but I didn't know Nestor had already been asked or the back-story, actually, we just got an email from Samuel before the extra slot release (I think... at any rate I saw his email before Nestor's). I know the project and I think it's very interesting, which is why I was happy to give them a slot. In any case, it sounds like I should check with Nestor first -- I'll do that.

Thanks,

Daria

On Fri, 1 Apr 2022 at 18:10, yoshitaka hatta <yoshitaka.hatta@gmail.com> wrote:

PS, I forgot to mention that we received a request from WG1 to take 1 or 2 talks, so we need to discuss.
I think those who submitted abstracts in time should be given priority...

Yoshitaka

2022年4月1日(金) 12:04 yoshitaka hatta <yoshitaka.hatta@gmail.com>:

Hi Daria,

I had a very bad impression when I first got this request. I sharply turned it down but Samuel didn't give up. I suggested him to ask Nestor if the submission of a new abstract is possible, and Nestor said no. So I am very surprised to hear Samuel contacted you even after that! Did he somehow learn about this slot increase?

We accepted more talks than our time allowed, and after this slot increase we already accepted 5 more talks, so we don't have much room left actually. But you gained 15 more slots, so perhaps you now have an opposite problem of filling up the slots?

One possibility is to transfer #192 (Kovchegov et al, global analysis of polarized DIS) to your WG, and we take Samuel's in exchange. (Indeed his abstract seems to have nothing to do with your WG.) But for us it is very awkward to do this given what happened...at least I have to check with Nestor.

Best

Yoshitaka

2022年4月1日(金) 11:00 Daria Sokhan <daria@jlab.org>:

Dear Yoshitaka and WG5 conveners,

Samuel Wallon emailed me about his postdoc, Saad Nabeebaccus, who didn't put in an abstract in time. He said that he first contacted you as it would be a better fit in your working group, but that was before the additional slots became available. Were you planning to accept their talk now? If not, then we would like to give them one of the extra talk slots in our WG, but I wanted to check with you first as I also think it's a better fit in the Imaging / Spin session.

Saad sent me his abstract by email:

Title: "Accessing GPDs through the exclusive photoproduction of a gamma-meson pair".
Abstract:"We consider the exclusive photo-production of a gamma-meson pair, working in the QCD factorisation framework. Explicitly, we consider a rho meson and a charged pion in the final state. This process has a significant advantage over meson production, since it allows us to probe chiral-odd GPDs, which are not well-known experimentally. The computation is performed at leading order and leading twist, and we intend to extend this to ${\cal O}(\alpha_s)$ soon. We discuss the prospects of measuring them in experiments, and in particular focus JLab and LHC (in UPC) kinematics."

Thanks,

Daria

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