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2021 Fall Meeting of the APS Division of Nuclear Physics
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Monday–Thursday, October 11–14, 2021;
Virtual; Eastern Daylight Time
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<h3 style="margin-bottom:0px">Session EA: New Precision Results in Hadronic Physics with Electroweak Probes</h3>
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11:45 AM–1:33 PM, 
Tuesday, October 12, 2021<br>

Room: Ballroom B<br><br>
Chair: Cynthia Keppel, Jefferson Lab<br>
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<h3 style="margin-bottom:0px">Abstract: <span title="DNP21-013646">EA.00003</span> : CREX: Precision Measurement of the Neutral Weak Form Factor in Elastic Electron-48Ca Scattering*</h3>

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12:57 PM–1:33 PM
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<a title="Previous Abstract" style="text-decoration:none" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__meetings.aps.org_Meeting_DNP21_Session_EA.2&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=50WEB9Oj6zN_Pm7FQRUTIQ&m=5-IhyQ4EwCgvn2eLURS01tUMahIpvlBdPSksiRUp6TU&s=1fOecX1PxzcCDA0HI_0cfFdCrF6YUBqhvI0-YzZT4cg&e="><img src="https://meetings.aps.org/images/arrow-left-12.gif" style="border: 0px none;"> </a> Abstract  </span>
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Presenter:
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<span style="padding-left:0.8em">Caryn Palatchi</span>
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<span style="padding-left:1.6em">(University of Virginia)</span>
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Author:
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<span class="gmail-largernormal">
<span style="padding-left:0.8em">Caryn Palatchi</span>
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<span style="padding-left:1.6em">(University of Virginia)</span>
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Collaboration:
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The CREX Collaboration
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A measurement of the neutron skin of the modestly sized, neutron rich 
48Ca nucleus can provide an important benchmark for nuclear theory. The 
RMS radius of the neutron distribution in the nucleus is measured via 
the parity violating asymmetry in longitudinally polarized elastic 
electron-nucleus scattering. While the electroweak nature of this parity
 violating interaction lends itself to cleanly interpretable results it 
also presents considerable experimental challenges. The CREX 
collaboration successfully completed data collection in 2020 at 
Jefferson Lab employing the CEBAF accelerator. Precise measurement of 
the neutron skin of 48Ca provides unique experimental input to help 
bridge ab-initio theoretical approaches and the nuclear density 
functional theory. Analysis of the experimental result and our 
understanding of its impact regarding nuclear structure will be 
presented.
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<p class="gmail-largernormal">*We acknowledge the support of the U.S. 
Department of Energy Office of Science, Office of Nuclear Physics, the 
National Science Foundation and NSERC (Canada).</p>
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