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<b>Physics Interview Seminar</b></div>
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<b>Ievgen Lavrukhin</b></div>
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<b>University of Michigan</b></div>
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<i> </i></div>
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<i>Proton Radius and Spin Puzzles: Insights from</i></div>
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<i>the MUSE and SpinQuest Experiments</i></div>
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<b>Abstract:</b></div>
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<b> </b></div>
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The proton, a fundamental building block of matter, remains an intriguing subject in nuclear and particle physics, with unresolved questions surrounding its radius and the origin of its spin. Despite over a century of investigation, challenges such as the “proton
radius puzzle” and the origin of proton spin continue to drive research efforts. In this talk, I will explore these issues through the lens of two significant experiments: MUSE, which investigates the proton’s size using electron and muon scattering, and SpinQuest,
which aims to measure the Sivers function for sea quarks to uncover evidence of non-zero orbital angular momentum of light antiquarks in the nucleon. By analyzing these two experiments, I will discuss how recent advancements in experimental techniques are
enhancing our understanding of proton structure and addressing unresolved questions in the field.</div>
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<b> </b></div>
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<b>Friday, December 13, 2024</b></div>
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<b>3:00pm – 5:00pm</b></div>
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<b><u><a href="https://jlab-org.zoomgov.com/j/1614341145?pwd=DwbibaerjaDpl62qKxpoMUhPSjEQbl.1" target="_blank" id="OWAee81d7d7-05fb-51d6-d2c7-015da9396ea7" class="OWAAutoLink" style="color: rgb(70, 120, 134);">ZOOM LINK - Ievgen Lavrukhin</a></u></b></div>
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<b>Meeting ID: 161 434 1145 / Passcode: 967877</b></div>
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<b><i>Stephanie Tysor</i></b></div>
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Division Administrator<br>
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Physics Division<br>
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Jefferson Lab</div>
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