[Clas12_dileptons] [EXTERNAL] Re: Slides for EUNPC

Bryan McKinnon Bryan.McKinnon at glasgow.ac.uk
Thu Oct 20 05:52:38 EDT 2022

Hi Richard

I agree with Valery regarding the cross-section plot. The arbitrary units need to be an uninterpretable range. I would also suggest that you include a bullet of some label explaining the neutron oint discrepancy, particularly the last one. We don’t want anyone to think we have a problem between the bound channels. I’m sure you will say something in words but I would acknowledge it on the slide. More generally, I have no issues showing this preliminary plot so long as it is portrayed very much as a work in progress, and indeed it shows very good progress. Others should pitch in on this though.

However, you will most likely be asked to comment on how your results compare to GlueX/Hall-C since you mention them on slide 3. “Our normalisation is still ongoing and we are not yet in a position to make a comparison to GlueX/Hall-C” should be the sentiment of your answer.

Slide #8: change that sampling fraction plot for one that is cleaner (i.e. doesn’t have the diagonal band. As and aside, you will also need a new one for the AI paper since Stepan flagged it there too.


> On 19 Oct 2022, at 22:46, Valery Kubarovsky via Clas12_dileptons <clas12_dileptons at jlab.org> wrote:
> Hi Richard,
> Your key slide is #12 - total cross section.
> You mentioned that the y-axis is AU. However, it is clear for the experts that the xs values are very close to nb. I am not sure that we are ready to show this plot as it is in your presentation.
> Let me suggest to change y-axis to some really arbitrary scale, say from 0 to 1.
> Your 3 xs points are very difficult to read. You may consider to shift these points along x-axis by some offset. 
> I have some other remarks but prefer to talk with you by zoom. It is not critical, just some suggestions to better organize your slides.
> Best regards,
> Valery
> From: Clas12_dileptons <clas12_dileptons-bounces at jlab.org <mailto:clas12_dileptons-bounces at jlab.org>> on behalf of Richard Tyson (PGR) via Clas12_dileptons <clas12_dileptons at jlab.org <mailto:clas12_dileptons at jlab.org>>
> Sent: Tuesday, October 18, 2022 11:33
> To: Clas12_dileptons at jlab.org <mailto:Clas12_dileptons at jlab.org> <clas12_dileptons at jlab.org <mailto:clas12_dileptons at jlab.org>>
> Subject: [Clas12_dileptons] [EXTERNAL] Slides for EUNPC
> Hi All,
> I'm going to give a talk at the EUNPC <https://urldefense.proofpoint.com/v2/url?u=https-3A__indico.cern.ch_event_1104299_&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=jsuHJvZltBfNoE12ZB2mBPyDG2wcNuxiKB_RQsgdKh0&m=ePNVAXp-VlqpgfE1JWDoc0ACxG5F4hSzbBNptLJe9sYwBTwf6Pd1IV_6UveLqo1T&s=UqcR-5pBvrQjzOBedTLQicMympYSXwE5wO9XR2A2luc&e=> conference next week on J/ψ Near-Threshold Photoproduction off the Proton and Neutron with CLAS12 and wanted to check that this if fine with you all, sorry for the short notice. I've attached my slides; any feedback is welcome!
> Thanks,
> Richard
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Dr. Bryan McKinnon

Nuclear and Hadron Physics Research
School of Physics and Astronomy
University of Glasgow
G12 8QQ
Scotland UK

Tel: (+44/0) 141-330-7226

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