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Hello All,
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<div class="ContentPasted0">This coming Monday, November 7th 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: <a href="https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09" id="LPNoLPOWALinkPreview">
https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a>
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<div class="ContentPasted0">Please see below for the title and abstract of Zhiquan's talk.</div>
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<div class="ContentPasted0"><u><b>Theory Seminar</b></u></div>
<div class="ContentPasted0">Monday, November 7th at 1:00 PM</div>
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<div class="ContentPasted0"><u><b>Zhiquan Sun</b></u> (MIT)</div>
<div class="ContentPasted0">will discuss "A Better Angle on Hadron Transverse Momentum Distributions at the EIC"</div>
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<div class="ContentPasted0"><u><b>Abstract:</b></u></div>
<span style="font-size: 12pt;" class="ContentPasted1">We propose a novel observable $q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">$,
sensitive to transverse momentum dependent distributions (TMDs) in the SIDIS process $e N \to e h X$, with $q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">/E_N$
defined purely by lab-frame angles. We prove factorization for $\mathrm{d}\sigma_h / \mathrm{d}q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">$
for $q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1"> \ll Q$ with standard TMD functions, enabling $q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">$
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 $q_</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">
\ll Q$, allowing for angular reconstruction of $Q, x, y$. Resummation and convergence of perturbative QCD predictions for $q_{</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">}$
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 $q_{</span><span style="font-size: 12pt; font-family: Cambria Math, serif, serif, EmojiFont;" class="ContentPasted1">∗</span><span style="font-size: 12pt;" class="ContentPasted1">}$ enables an order-of-magnitude improvement in the expected experimental
resolution at the EIC.</span><br>
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<div class="ContentPasted0">Please note the return to standard time beginning this Sunday.</div>
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<div class="ContentPasted0">Have a pleasant weekend!</div>
Caroline, Colin & Patrick<br>
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