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Hi Richard,<br>
<br>
that's a very nice talk!<br>
I have comments and some questions, see below.<br>
<br>
Best regads,<br>
Su.<br>
<br>
<br>
General comments: <br>
* I feel that it is not so practical to have the references on the
last page. In a talk, the audience needs to see a reference on the
same and every page that mentions it. (Also better for extracting a
page post-presentation). <br>
<br>
* To my taste, there is too much prose on your slides, especially
since I expect you will go through the slides rather fast.<br>
<br>
* I would prefer that the motivational pages (5,6) come first and
then the experimental approach, after that analysis, ...<br>
<br>
<br>
In detail:<br>
* On page 3, Maybe indicate that the beam comes from the right
(which is unconventional 'on paper'). On page 8 it is 'the right way
around'. Actually, I would rotate CEBAF and CLAS on page 3 so that
you have a similar perspective as on page 2. <br>
* CHL-2 is indicated but you do not mention it.<br>
* As you are referring to GlueX later, I would reduce the labeling
of the halls:<br>
halls A, B, C --> Hall B: CLAS12<br>
hall D --> Hall D: GLueX<br>
<br>
* page 6:<br>
I thought you will change collaborations during your talk ;) Here,
I feel CLAS12 belongs in the headline!<br>
<br>
𝑃𝐶+resonances at <strike>the</strike> LHCb (2019) -->
𝑃𝐶+resonances with CLAS12<br>
<br>
CLAS12 should be able to place upper limits on the branching
fraction B(𝑃𝐶+→ ψ p) <strike>from CLAS12 data</strike>.<br>
<br>
* On page 9:<br>
Muons are required to have mip like energy deposition... --> Muon
candidates are minimum inonizing, with a significant charged pion
contamination. <br>
<br>
* page 11:<br>
<br>
𝑒+𝑒−produced on a bound proton in the deuteron target.<br>
question: why muons from p and e+e- from bound p?<br>
<br>
Electron radiation in the detector<br>
question: what exactly does that include? means you have not
done simulatons/kfit yet?<br>
viz, you should say that that will be fixed.<br>
what about radiative corrections?<br>
<br>
peak to away --> peak away<br>
<br>
only a subset of all available data<br>
comment: always say how many percent<br>
<br>
* page 12:<br>
<br>
photoproduction cross sections are predicted to provide unique
insight --> photoproduction cross sections provide unique
insight <br>
<br>
Several CLAS12 analyses aiming for these measurements are
ongoing and well<br>
advanced, as they have well defined event and particle
identification techniques.<br>
<br>
Several CLAS12 analyses aiming for these measurements are ongoing
and well<br>
advanced, as they have well defined event and particle
identification techniques. --><br>
Several CLAS12 analyses are ongoing for 𝑒𝑝→→(𝑒′)𝑒+𝑒−p <br>
* Joseph Newton, J/ 𝜓 photoproduction <br>
* Pierre Chatagnon, Timelike Compton Scattering<br>
<br>
Next, we aim to calculate the total and differential cross sections
for the proton and<br>
deuterium targets. --><br>
Next: total and differential cross sections for the proton and
deuterium targets<br>
<br>
<strike>This is a collaborative effort, involving the whole of the
CLAS12 collaboration, and in</strike><strike><br>
</strike><strike>particular Joseph Newton’s work on J/ 𝜓
photoproduction in the 𝑒𝑝→→(𝑒′)𝑒+𝑒−p channel and Pierre
Chatagnon’s work on Timelike Compton Scattering in the same
channel.</strike><br>
<br>
<br>
<div class="moz-cite-prefix">On 02.04.21 15:10, Richard Tyson (PGR)
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CWLP265MB12994FAAA7B795643C36742F877A9@CWLP265MB1299.GBRP265.PROD.OUTLOOK.COM">
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font-size: 12pt; color: rgb(0, 0, 0);">
<div
style="color:black;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif">Hi,</div>
<div
style="color:black;font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif"><br>
I'm going to give a talk on "J/ψ near threshold
photoproduction at CLAS12" at the upcoming <a
href="https://urldefense.proofpoint.com/v2/url?u=http-3A__appheppnp2021.iopconfs.org_home&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=33hEheRcHuqzMP4K5hhMDPge6hQHiwXozGe7lR_eSfg&m=u6I1gvh0kbXC2s4z5iJqCqc4tXtP-9hKbdx0pyjgzJU&s=pkA04KqWSSaEtPyLQiJuoce2mwYOYwhfwj95OuWg-Tk&e="
title="http://appheppnp2021.iopconfs.org/home"
moz-do-not-send="true">IoP conference</a> (12th-15th of
April). I've already ran this by the dilepton work group but
wanted to check that this also fine with you all. I've
attached my slides; any feedback is welcome!<br>
<br>
Thanks, Richard</div>
<br>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
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