[Primexd] [EXTERNAL] Updated Slides

[Gan, Liping]

Hi, Tyler,

Here are my comments and suggestions:

Slide #2, change “PrimEx Eta is now studying this anomaly with the η→γγ decay mode in Hall D at JLab”
 To “The PrimEx-Eta experiment is an extension of this experimental program to measure the η radiative decay width in Hall D”

Slide #3, we cannot say “η→γγ decay is defined by the chiral anomaly” because of a large correction from the eta-eta’ mixing. I would suggest “η→γγ decays mainly through the chiral anomaly”

Slide #4, suggest adding the figure for quark mass ratio and reducing the number of bullet point into the following:

  *   The projected PrimEx-eta result on Γη→γγ with a 3%  precision will resolve a long-standing discrepancy between the previous Primakoff experiment and the collider measurements.
  *   Provides a critical input to improve the determination of the eta-eta’ mixing angle and the light quark mass ratio



Slide #5, the size of CompCal is not correct. It is a 12x12 array, 24.6x24.6 cm^2



Slide #6, You called the  Compton Calorimeter in two different names (see slide #5)! Please choose one.

               The Compton Calorimeter was commissioned in fall 2018. The first production run was performed in spring 2019.



Cheers,

Liping

________________________________
From: Primexd <primexd-bounces at jlab.org> on behalf of gasparan at jlab.org <gasparan at jlab.org>
Sent: Tuesday, April 13, 2021 11:12 AM
To: Tyler J Hague <tjhague at ncat.edu>
Cc: primexd at jlab.org <primexd at jlab.org>
Subject: Re: [Primexd] [EXTERNAL] Updated Slides

[This email originated from outside of UNCW]

  Hi Tyler,

 Very good slides, it is ready to go.
 Few minor comments:
 1) on slide #8, "... additional decay particles ..." better "... recoil
    nuclei ..."
 2) slide #12, Summary,
            3th bullet, no need for "... our ..."
            4th bullet, better something like this "... the second run is
                        scheduled ..."
            5th bullet, no need for this bullet.
 3) I did not check the GlueX requirement for the acknowledgments but
    I think if you bring the NSF part in the summary, just bellow the
    main text, that would be the standard way and visible (we need that).

 Thanks,
 Ashot


> Hello everyone,
>
> I have been working on my slides and have updated them. Please let me know
> if you have any comments or changes you would like me to make. I have a
> practice talk tomorrow morning.
>
> I have uploaded my slides to the wiki, as the file is too large to email.
> They are located at:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__nam12.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Fhalldweb.jlab.org-252Fwiki-2Dprivate-252Fimages-252F6-252F65-252FTylerH-5FAPS21.pdf-26amp-3Bdata-3D04-257C01-257Cganl-2540uncw.edu-257Ca4a9c34f31ae4293e5f908d8fe8ea063-257C2213678197534c75af2868a078871ebf-257C1-257C0-257C637539235831804560-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C1000-26amp-3Bsdata-3DhyYwFselezji1jmcuTHh65Z3til3MTg6V6q2FwZcDIA-253D-26amp-3Breserved-3D0&d=DwIFJg&c=CJqEzB1piLOyyvZjb8YUQw&r=lU05Rh9aCuulfMNDTEUwlg&m=R5hIPs0UIJI8A4UjbmorNxhNsoftMQ8bxeElpDtw084&s=Kw_U251H6w-mnd8H6REYgwHAL30xUyQxTotLRHX45-8&e= 
>
> My APS presentation is next week on Tuesday April 20 at 4:45 PM Central
> Time.
>
> Thank you,
> Tyler
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