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<span style="font-size: 15px; font-family: "Microsoft Yahei UI", Verdana, Simsun, "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span style="font-size:11pt;margin:0px" class="ContentPasted0">Dear
all, </span></span></span><br class="ContentPasted0">
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<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);"><br class="ContentPasted0">
</span></span><span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">On
Monday,<span class="ContentPasted0"> </span></span><span class="x_ContentPasted0 ContentPasted0" style="font-size: 11pt; margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">October 16</span></span><span style="font-size: 11pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><sup class="x_ContentPasted0 ContentPasted0" style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">th</sup></span><span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);"><sup class="ContentPasted0"></sup></span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">,
2023 at 1pm EDT, we will have a<span class="ContentPasted0"> </span></span><span style="font-size: 11pt; margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0">hybrid seminar given by Eric
Moffat of Argonne National Lab <span class="x_ContentPasted2 ContentPasted0" style="font-family: Calibri, sans-serif; margin: 0px; display: inline !important; color: rgb(66, 66, 66); background-color: rgb(255, 255, 255);">in the CEBAF Center Auditorium and</span></span><span style="font-size: 11pt; margin: 0px; background-color: white;"></span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0"><span style="margin:0px" class="ContentPasted0"> </span>on
the <span class="x_ContentPasted3 ContentPasted0" style="margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">following</span><span class="ContentPasted0"> </span>Zoom for Government link:<span style="margin:0px" class="ContentPasted0"> </span></span></span><br class="x_Apple-interchange-newline ContentPasted0" style="font-family: "Microsoft Yahei UI", Verdana, Simsun, "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 15px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">
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<a href="https://jlab-org.zoomgov.com/j/1609875070?pwd=dndhY3paSmRRZ1RTQndtTEwxaWZOdz09" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0" id="OWA45cdae26-5b74-9d08-4680-a81652b10298" class="x_OWAAutoLink x_ContentPasted4 ContentPasted0" style="font-family: Calibri, sans-serif; margin: 0px; outline: 0px; background-color: rgb(255, 255, 255);"><span style="font-size:11pt;margin:0px">https://jlab-org.zoomgov.com/j/1609875070?pwd=dndhY3paSmRRZ1RTQndtTEwxaWZOdz09</span></a></div>
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<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<span style="font-size: 15px; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Please see below for the title
and abstract. </span></span><span style="display: inline !important; background-color: rgb(255, 255, 255);"></span>
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<u style="font-weight:bold"><span style="font-size:12pt;margin:0px"><span data-markjs="true" class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Theory</span></span><span style="margin:0px"><span class="x_ContentPasted1 ContentPasted1" style="margin:0px"> </span></span><span style="font-size:12pt;margin:0px"><span data-markjs="true" class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Seminar</span></span></u><span class="x_ContentPasted1" style="margin:0px"><span class="x_ContentPasted1 ContentPasted1" style="margin:0px">:</span><b class="ContentPasted1"> </b></span><span class="x_ContentPasted1 ContentPasted1" style="margin:0px">Monday<span class="ContentPasted1"> </span><span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; background-color: rgb(255, 255, 255);"><span class="x_ContentPasted0 x_ContentPasted5 ContentPasted1" style="font-size: 11pt; margin: 0px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">October
16</span></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; background-color: rgb(255, 255, 255);"><sup class="x_ContentPasted0 x_ContentPasted5 ContentPasted1" style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">th</sup></span></span><span class="x_ContentPasted1 ContentPasted1" style="margin:0px">,
1pm EDT (<span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted1">hybrid</span>)</span></p>
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<b><u><span style="font-size:11pt;margin:0px"><br class="x_ContentPasted1 ContentPasted1">
</span></u></b></p>
<p style="margin: 0px; font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(36, 36, 36); background-color: white;">
<b><u><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Speaker</span></u></b><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">:<span class="x_ContentPasted1 ContentPasted1" style="margin:0px"> </span><span data-markjs="true" style="margin:0px"></span><span data-markjs="true" class="x_ContentPasted1" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"></span><span style="margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted1">Eric
Moffat</span><span data-markjs="true" class="x_ContentPasted1" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"></span><span data-markjs="true" style="margin:0px"></span><span class="x_ContentPasted1 ContentPasted1" style="margin:0px"> </span>(<span class="x_ContentPasted1" style="margin: 0px; color: black; background-color: white;"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted1">Argonne
National Lab</span></span>) </span></p>
<p style="margin: 0px; font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(36, 36, 36); background-color: white;">
<b style="font-size:11pt"><span style="margin: 0px; color: black;"><b style="font-size: 13.32px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt;margin:0px"><br class="x_ContentPasted1 ContentPasted1">
</span></u></b></span></b></p>
<p style="margin: 0px; font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(36, 36, 36); background-color: white;">
<b style="font-size:11pt"><span style="margin: 0px; color: black;"><b style="font-size: 13.32px; color: rgb(36, 36, 36);"><u><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Title</span></u></b><span class="x_ContentPasted1 ContentPasted1" style="font-weight: 400; margin: 0px; color: rgb(36, 36, 36);">:</span></span><span style="font-size: 12pt; margin: 0px; color: black;"><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px"> </span></span></b><span style="font-weight: normal; font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;" class="ContentPasted1">Shedding
light on shadow generalized parton distributions </span></p>
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<b><span style="margin: 0px; color: black;"><b style="font-size: 13.32px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt;margin:0px"><br class="x_ContentPasted1 ContentPasted1">
</span></u></b></span></b></p>
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<b><span style="margin: 0px; color: black;"><b style="font-size: 13.32px; color: rgb(36, 36, 36);"><u><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Abstract</span></u></b><span class="x_ContentPasted1 ContentPasted1" style="font-weight: 400; margin: 0px; color: rgb(36, 36, 36);">:</span></span></b><span style="font-size: 12pt; margin: 0px; color: black;"><span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px"> <span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">The
feasibility of extracting generalized parton distributions (GPDs) from deeply virtual Compton scattering (DVCS) data has recently been questioned because of the existence of an infinite set of so-called ¡°shadow GPDs¡± (SGPDs). These SGPDs depend on the process
and manifest as multiple solutions (at a fixed scale </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">Q2</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">)
to the inverse problem that needs to be solved to infer GPDs from DVCS data. SGPDs therefore pose a significant challenge for extracting GPDs from DVCS data. With this motivation we study the extent to which QCD evolution can provide constraints on SGPDs.
This is possible because the known classes of SGPDs begin to contribute to observables after evolution, and can then be constrained (at the input scale </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">Q02</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">)
by data that has a finite </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">Q2</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"> range.
The impact that SGPDs could have on determining the total angular momentum, pressure and sheer force distributions, and tomography is also discussed. We find that </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">Q2</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"> evolution,
given empirical data over a wide range of skewness (</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">¦Î</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">)
and </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">Q2</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"> scales,
constrains the SGPDs studied at low </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">x</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"> and
low </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">¦Î</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">.
If this finding generalizes to all SGPDs¡ªand we have not been able to find any SGPDs with qualitatively different behavior¡ªthen this potentially makes extraction of GPDs from DVCS possible over a limited range of </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">x</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"> and </span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black;">¦Î</span></span><span style="font-size: 16px; font-family: "Times New Roman", serif; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);"><span class="x_ContentPasted6 ContentPasted1" style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;">. </span></span><span style="font-size: 16px; margin: 0px; background-color: rgb(255, 255, 255);"><br class="x_ContentPasted6 ContentPasted1">
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<span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">See you on Monday. </span></p>
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<span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Best regards, </span></p>
<p style="margin: 0px; font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(36, 36, 36); background-color: white;">
<span class="x_ContentPasted1 ContentPasted1" style="font-size:11pt;margin:0px">Caroline, Joe, and Zheng-Yang</span></p>
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