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<p class="MsoNormal"><span style="font-size:11.0pt">Good morning,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Please see email below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thank you.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;color:#242424">v/r,</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;color:#242424">Mark Robin San Diego</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:11.0pt;color:#242424">Hall D Administrator
</span></i><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:11.0pt;color:#242424">Thomas Jefferson National Accelerator Facility</span></i><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:11.0pt;color:#242424">Jefferson Science Associates, LLC</span></i><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:11.0pt;color:#242424">Desk# (757) 269-7798</span></i><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:11.0pt;color:#467886;mso-ligatures:standardcontextual"><a href="mailto:sandiego@jlab.org"><span style="color:#467886">sandiego@jlab.org</span></a></span></i><span style="mso-ligatures:standardcontextual"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Cuga <cuga-bounces@jlab.org>
<b>On Behalf Of </b>Jodi Patient via Cuga<br>
<b>Sent:</b> Wednesday, July 9, 2025 8:23 AM<br>
<b>To:</b> jlabsa_gs@jlab.org; 'cuga@jlab.org' <cuga@jlab.org>; Lisa Surles-Law <surles@jlab.org>; Jalyn Dio <jdio@jlab.org>; Rhonda Bell <rbell@jlab.org>; jlab_postdocs@jlab.org; Datta, Provakar <provakar.datta@uconn.edu>; Volker Ziemann <ziemann@jlab.org><br>
<b>Subject:</b> [Cuga] **Today** GSPDA Lunch Seminar - Wednesday, July 9<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black">Jefferson Lab's Graduate Student and Post-Doc Association Wiki:<o:p></o:p></span></p>
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<p style="background:white"><span style="font-family:"Times New Roman",serif;color:black"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:black"> </span><u><span style="font-family:"Times New Roman",serif;color:blue"><a href="https://gspda.jlab.org/wiki/index.php/Main_Page" title="https://gspda.jlab.org/wiki/index.php/Main_Page">https://gspda.jlab.org/wiki/index.php/Main_Page</a></span></u><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424">This program is supported by the Initiatives Fund Program, a JSA commitment, to</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424">support programs, initiatives, and activities that further the scientific outreach, promote</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424">the science, education and technology of Jefferson Lab and benefit the Lab’s extended</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424">user community in ways that complement the Lab’s basic and applied research missions.</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> Wednesday, July 9, 2025</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> **L102**</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Times New Roman",serif;color:#242424"> 12:00 am – 1:00 pm</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif"> <o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif"> "<span style="color:black">The SBS Program in Hall A: Decoding the Nucleon's Structure</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black"> with Unprecedented Resolution and Precision" <o:p></o:p></span></p>
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<p><span style="font-family:"Times New Roman",serif"> <o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif"> <o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif">
<span style="color:black"> Provakar Datta</span><o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif;color:black"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif;color:black"> </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif;color:black">Abstract: </span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p><span style="font-family:"Times New Roman",serif;color:black">The Super BigBite Spectrometer (SBS) family of experiments has occupied Hall A since fall 2021 and will continue to do so through the end of the current run period. Its primary goal is to extend
high‑precision measurements of the nucleon electromagnetic form factors (EMFFs) to unprecedented momentum transfers (Q2). EMFFs are fundamental observables that reveal the nucleon’s spatial and spin structure; yet, apart from the proton magnetic form factor
GMp, accurate data at large Q2 remain scarce because of significant experimental challenges.</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black">The state‑of‑the‑art BigBite and Super BigBite spectrometers overcome these challenges, enabling precise measurements of the remaining EMFFs up to—and in some cases beyond—Q2
= 10 (GeV/c)2. The impact of these results is far‑reaching, informing, for example, extractions of quark form factors and the role of two‑photon‑exchange amplitudes in elastic electron–neutron scattering.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black">Since 2021, four SBS experiments have been completed successfully, and data taking for the final experiment is proceeding smoothly. In this talk, I will present an overview of
the SBS physics goals, discuss the key detector designs that enable these challenging measurements, highlight the current status of the data analysis, and conclude with an outlook on the rich physics program that lies ahead. <o:p></o:p></span></p>
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<p style="margin-bottom:8.0pt;line-height:13.8pt"><span style="font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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