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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: black; background-color: white;">Dear all, </span></div>
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On Monday, </span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: black; background-color: white;">March 11<sup>th</sup></span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: white;">,
2024 at 1pm </span><span style="font-family: Calibri, sans-serif; font-size: 14.6667px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">EDT</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: white;">,
we will have a </span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">hybrid</span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: white;"> seminar
given by </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(32, 32, 32); background-color: rgb(255, 255, 255);">Stanislav Srednyak of Duke University</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> in
CC L102 and</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: white;"> </span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">on
the Zoom for Government link: </span></div>
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<div class="elementToProof"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0);"><a href="https://jlab-org.zoomgov.com/j/1607630728?pwd=VTB5UHlvZldobFVrbEY0ZHZvempFQT09" target="_blank" id="OWAfaab73b2-a844-b78e-9e48-15b3f5cd363c" class="OWAAutoLink" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0" style="margin: 0px; text-align: left;">https://jlab-org.zoomgov.com/j/1607630728?pwd=VTB5UHlvZldobFVrbEY0ZHZvempFQT09</a></span></div>
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<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: black;">Please see below for the title and abstract. </span></div>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b><u>Theory Seminar</u></b>:<b> </b></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">March
11<sup>th</sup></span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">, 1pm
</span><span style="font-family: Calibri, sans-serif; font-size: 14.6667px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">EDT</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"> (</span><span style="font-family: Calibri, sans-serif; font-size: 14.6667px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">hybrid</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">)</span></p>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Speaker</u></b>:
</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(32, 32, 32); background-color: rgb(255, 255, 255);">Stanislav Srednyak</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"> (</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(32, 32, 32); background-color: rgb(255, 255, 255);">Duke
University</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);">) </span></p>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Title</u></b>:</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: black;"><b> </b></span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14.6667px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Current
studies of QED radiative corrections for PRad-II and DRad experiments</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> </span></p>
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<span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(36, 36, 36);"><b><u>Abstract</u></b>:</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: black;"> </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: black; background-color: rgb(255, 255, 255);">The
JLab PAC-approved PRad-II experiment and the proposed JLab DRad experiment are designed to measure unpolarized elastic electron-proton (e+p) and electron-deuteron (e+d) cross sections as well as the proton and deuteron charge radii, respectively. In order
to extract the cross sections and radii with high precision, having reliable knowledge of QED radiative corrections are essential. In this presentation, we will first review
</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: black; background-color: white;">different approaches for calculating one- and two-loop radiative corrections to the e+p and e+d scattering. One method of calculations
is based on differential equations and master integrals. As such, we will describe our view towards generalization of the method to processes with real emission. Another, more classical approach is based on extension of the work of Bardin-Shumeiko for infrared
divergence cancellation. We will present the status of our current work on a semi-analytic calculation of the model-independent part of higher-order radiative corrections in e+p scattering, which may be applicable to the PRad-II experiment. We will also discuss
the results from our recent paper obtained for the DRad kinematics on lowest-order radiative corrections in unpolarized elastic e+d scattering beyond the ultra-relativistic limit.</span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);">See you on Monday. </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);">Best regards, </span></p>
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<span style="font-size: 11pt; color: rgb(36, 36, 36);">Caroline, Joe, and Zheng-Yang</span></p>
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