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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>Physics Interview Seminar</b> </span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>Provakar Datta</b></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b> University of Connecticut</b> </span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><i>Probing the Neutronˇ¦s Internal Structure via High-Q2</i></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><i>Electromagnetic Form Factor Measurements</i></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>Abstract:</b> </span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><i>The electromagnetic form factors (EMFFs) are among the most basic observables sensitive to the nucleonˇ¦s internal structure. Knowing their values with high precision in a
wide range of squared four-momentum transfer (Q2) is essential for the advancement of QCD. The high-Q2 precision data of the nucleon EMFFs are scarce due to the challenges associated with such measurements. To address this, the Super BigBite Spectrometer (SBS)
collaboration is currently running multiple experiments in Jefferson Labˇ¦s experimental Hall A to precisely measure the nucleon EMFFs with unprecedented Q2 reach.</i></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><i>The first of these experiments, SBS-GMn, was completed during the October 2021 to February 2022 run period, aiming to extend the high-precision measurements of the neutron
magnetic form factor (GMn ) in the Q2 range of 4 to 13.6 (GeV/c)2 using the ˇ§ratioˇ¨ method. In this approach, systematic errors are greatly reduced by extracting GnM from the ratio of neutron-coincident (D(e, eˇ¬n)) to proton-coincident (D(e, eˇ¬p)) quasi-elastic
electron scattering from deuteron. The scattered electrons were detected using the BigBite spectrometer, which features multiple Gas Electron Multiplier (GEM) layers with a large active area for high-precision tracking at very high rates. Simultaneous nucleon
detection was performed with the Super BigBite spectrometer, which utilizes a dipole magnet with a large solid angle acceptance at forward angles, along with a novel hadron calorimeter that has very high and comparable detection efficiencies for both protons
and neutrons. This setup could handle very high luminosity, making high-Q2 measurements feasible. In this talk, I will provide an overview of the SBS-GMn experiment, briefly discussing the underlying theory, measurement techniques, associated technical challenges,
and physics analysis</i></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><i>methodology, and conclude by presenting preliminary results.</i></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b><br>
Wednesday, October 16, 2024</b></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>1:00 pm ˇV 2:30 pm
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>L102</b></span></p>
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<p style="margin: 0px; font-family: PMingLiU, serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"> </span></p>
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<p style="margin: 0px; font-family: PMingLiU, serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b>Zoom Link:</b></span></p>
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<span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"><b><u><a href="https://jlab-org.zoomgov.com/j/1606538325?pwd=x7hWegfyvdOmazCUcAa6VrFRIIaVaz.1&from=addon" target="_blank" id="OWAc031f8d7-136d-82c2-efec-5416527a6c0f" class="OWAAutoLink" rel="noopener noreferrer" style="margin-top: 0px; margin-bottom: 0px;" data-auth="NotApplicable" data-linkindex="0">https://jlab-org.zoomgov.com/j/1606538325?pwd=x7hWegfyvdOmazCUcAa6VrFRIIaVaz.1&from=addon</a></u></b></span></p>
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<p style="margin: 0px; font-family: Aptos, sans-serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: rgb(57, 57, 77);"><b>Meeting ID:</b></span></p>
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<p style="margin: 0px; font-family: Aptos, sans-serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: rgb(57, 57, 77);"><b>160 653 8325</b></span></p>
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<p style="margin: 0px; font-family: Aptos, sans-serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: rgb(57, 57, 77);"><b>Passcode:</b></span></p>
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<p style="margin: 0px; font-family: Aptos, sans-serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: rgb(57, 57, 77);"><b>341766</b></span></p>
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<p style="margin: 0px; font-family: PMingLiU, serif; font-size: 12pt;"><span style="font-family: Times New Roman, serif, serif, EmojiFont; color: black;"> </span></p>
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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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757-269-6005<br>
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