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Hi, Matt,</div>
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Thanks very much for your comments and questions. The answers to those questions can be found in the following publication:<br>
<div class="__InlineList__ elementToProof"><span><span><i class="ContentPasted0">Phys.Rept.</i><span class="ContentPasted0"> 945</span><span class="ContentPasted0"> (2022)</span></span><span class="ContentPasted0"> 1-105</span></span></div>
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<div><span><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_2007.00664&d=DwMGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=JOJ62NEwwkI7R0M2R59fbQ&m=y8btMCTFBwvIa_heVNDNYTUZg7lqHXd6ixS-OK7pqB5oClNcNoHX-APiTIlbxQP1&s=kwhkaqH7SQn68skuENDEiTsoOSg1foJT0OonfVtIvRk&e=" target="_blank" rel="noopener noreferrer" id="OWAe2d9eb9c-2f3c-33cc-4531-10d0b8d8b8c9" class="OWAAutoLink ContentPasted0" data-loopstyle="linkonly">2007.00664</a>.</span></div>
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<div><span>Best,</span></div>
<div><span>Liping<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Shepherd, Matthew <mashephe@indiana.edu><br>
<b>Sent:</b> Friday, January 5, 2024 11:18 AM<br>
<b>To:</b> Gan, Liping <ganl@uncw.edu><br>
<b>Cc:</b> jef@jlab.org <jef@jlab.org>; Sean Dobbs <sdobbs@jlab.org><br>
<b>Subject:</b> Re: [Jef] [EXTERNAL] abstract to APS april meeting</font>
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<div class="PlainText">[This email originated from outside of UNCW]<br>
<br>
Hi Liping,<br>
<br>
You write:<br>
<br>
"The QCD symmetries at low energies are manifested in the most unambiguous form in η and η'. Thus, the precision measurement of their properties will yield light on our understanding of the symmetry structure, as well as the origin and dynamics of the confinement
QCD."<br>
<br>
What symmetry structure are you referring to? Also, what precision properties of the eta and eta' will be measured with JEF and how will they tell us about the origin and dynamics of confinement in QCD?<br>
<br>
Finally, why is it relevant that the eta and eta' have "quantum numbers of the vacuum (except parity)" ? What about mesons that really have quantum numbers of the vacuum? Or mesons like the f1 that have quantum numbers of the vacuum except spin? Are they
more or less useful than the eta and eta'? Seems like forbidden strong decays is the key thing rather than quantum numbers?<br>
<br>
Cheers,<br>
<br>
Matt<br>
<br>
<br>
<br>
<br>
> On Jan 5, 2024, at 10:16 AM, Gan, Liping via Jef <jef@jlab.org> wrote:<br>
><br>
> Dear colleagues,<br>
><br>
> I will submit an abstract on the JEF physics (<a href="https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6308" data-auth="NotApplicable" id="OWAc6df626c-5d69-6d7e-5a13-59f801161c31" class="OWAAutoLink" data-loopstyle="linkonly">https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhalldweb.jlab.org%2Fdoc-private%2FDocDB%2FShowDocument%3Fdocid%3D6308&data=05%7C02%7Cganl%40uncw.edu%7C8d880a57a0934082dfeb08dc0e09e4e6%7C2213678197534c75af2868a078871ebf%7C0%7C0%7C638400682865786977%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=dlpaKxWPgzDyQdjE7OqAOGmw%2FXlOnKwhtDCm%2B2%2BjOI8%3D&reserved=0</a>)
later today to APS April meeting. I would appreciate very much if you could send me your comments as soon as possible. Thanks!<br>
><br>
> Best,<br>
> Liping<br>
><br>
> _______________________________________________<br>
> Jef mailing list<br>
> Jef@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/jef" data-auth="NotApplicable" id="OWA2019e0fb-6e21-81cf-f5eb-8677b8ee08c9" class="OWAAutoLink" data-loopstyle="linkonly">
https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmailman.jlab.org%2Fmailman%2Flistinfo%2Fjef&data=05%7C02%7Cganl%40uncw.edu%7C8d880a57a0934082dfeb08dc0e09e4e6%7C2213678197534c75af2868a078871ebf%7C0%7C0%7C638400682865786977%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=NQMkK21nHMMpE5x7DsvldF%2FtgDILmSXw7LDgmfCy%2BSw%3D&reserved=0</a><br>
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