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<span style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;background-color:rgb(255, 255, 255);display:inline !important">Hello All,</span>
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Tomorrow at 1:00 PM (EST), Zhiquan Sun will give our next hybrid theory seminar of the Fall term. If you will be on-site and are comfortable doing so, please join us in room L102 of CEBAF Center. Otherwise, Zhiquan's seminar will also be provided virtually
on our usual ZoomGov link:<span> </span><a href="https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09" id="LPNoLPOWALinkPreview" style="color:rgb(0, 120, 212)">https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a><br>
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Please see below for the title and abstract of Zhiquan's talk.</div>
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<u><b>Theory Seminar</b></u></div>
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Monday, November 7th at 1:00 PM</div>
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<u><b>Zhiquan Sun</b></u><span> </span>(MIT)</div>
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will discuss "A Better Angle on Hadron Transverse Momentum Distributions at the EIC"</div>
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<u><b>Abstract:</b></u></div>
<span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">We propose a novel observable $q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">$,
sensitive to transverse momentum dependent distributions (TMDs) in the SIDIS process $e N \to e h X$, with $q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">/E_N$
defined purely by lab-frame angles. We prove factorization for $\mathrm{d}\sigma_h / \mathrm{d}q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">$
for $q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5"><span> </span>\ll
Q$ with standard TMD functions, enabling $q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">$
to substitute for the hadron transverse momentum $P_{hT}$. A double-angle reconstruction method is given which is exact to all orders in QCD for $q_</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5"><span> </span>\ll
Q$, allowing for angular reconstruction of $Q, x, y$. Resummation and convergence of perturbative QCD predictions for $q_{</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">}$
will also be discussed. By replacing measurements of $\mathrm{d}\sigma/\mathrm{d} P_{hT}\mathrm{d} \phi_h$ by $\mathrm{d}\sigma/\mathrm{d} q_*$ the prospects for precisely mapping the 3D structure of hadronization and confinement with TMDs are bright. We show
that $q_{</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-size:12pt;font-family:"Cambria Math", serif, serif, EmojiFont;line-height:1.5">∗</span><span class="ContentPasted1" style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;font-size:12pt;line-height:1.5">}$
enables an order-of-magnitude improvement in the expected experimental resolution at the EIC.</span><br style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif">
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Please note the return to standard time beginning this Sunday.</div>
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See you tomorrow!</div>
<span style="color:rgb(0, 0, 0);font-family:Calibri, Arial, Helvetica, sans-serif;background-color:rgb(255, 255, 255);display:inline !important">Caroline, Colin & Patrick</span>
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