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<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0"><span style="font-size: 12pt; color: black; background-color: white;" class="ContentPasted0">Hello All,<span class="ContentPasted0"> </span></span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0">Tomorrow, May 1st, at 1:00 PM (EDT), Sebastian Jaskiewicz of Durham University will give our next hybrid theory seminar. If you will be on-site and are comfortable doing so, please join us
in room L102 of CEBAF Center. Otherwise, Sebastian's seminar will also be provided virtually on our usual ZoomGov link:<span class="ContentPasted0"> </span><a href="https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-safelink="true" data-linkindex="0" class="ContentPasted0">https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a></span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Please see below for the title and abstract.</span></p>
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<b><u><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Theory Seminar</span></u></b><span style="font-size: 12pt; color: black;"></span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Monday, May 1st at 1:00 PM</span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1"> </span></p>
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<b><u><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Sebastian Jaskiewicz</span></u></b><span><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1"> </span></span><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">(Durham
University)</span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">will discuss "</span><span style="color: black;" class="ContentPasted0 ContentPasted1">
</span><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Developments in subleading power factorization and resummation"</span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1"> </span></p>
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<b><u><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Abstract</span></u></b><span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">:</span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Precise theoretical predictions are a key ingredient in ongoing tests of the Standard Model and in searches for physics beyond it. Since its inception twenty years ago, Soft
Collinear Effective Theory (SCET) has been successfully applied to improve the precision of many important observables in collider physics. It is now standard practice to use SCET to derive factorization theorems and apply renormalization group (RG) methods
to achieve leading power resummation of large logarithms that appear in regions of phase space with disparate energy scales. In this talk, I will discuss the recent developments in taking the step beyond the leading term in the power expansion. Focusing on
the threshold Drell-Yan process, I will explain how the general factorization formula can be derived and I will discuss new objects that emerge beyond leading power: collinear jet functions and generalized soft functions. I will also explain challenges and
advancements in achieving resummation at LL and beyond at next-to-leading power.</span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1"> </span></p>
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<span style="font-size: 12pt; color: black;" class="ContentPasted0 ContentPasted1">Best Regards,</span></p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0"><span style="font-size: 12pt; color: black; background-color: white;" class="ContentPasted0 ContentPasted1">Caroline, Patrick and Joe</span></p>
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