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<div class="moz-cite-prefix">On 07-09-2025 15:46, Joseph Karpie via
Theory-seminars wrote:<br>
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Hey Everyone,</div>
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On Monday we will be having a remote theory seminar at 1pm by
Zack Hall (LBNL). Please join us in L102 or on Zoom
<a class="moz-txt-link-freetext" href="https://jlab-org.zoomgov.com/j/1615374217?pwd=nXXAU1vhkE6GamxHmTXx9py6xOaF1R.1">https://jlab-org.zoomgov.com/j/1615374217?pwd=nXXAU1vhkE6GamxHmTXx9py6xOaF1R.1</a></div>
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Title: A sub-percent Determination of the Nucleon Axial Coupling
with Lattice Quantum Chromodynamics</div>
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Abstract: The nucleon axial coupling, gA, plays a critical role
in beta decay and determining the free neutron lifetime, along
with additional nuclear processes of interest. In our work we
utilize lattice quantum chromodynamics (LQCD) as a
non-perturbative method to determine the axial coupling from
Standard Model QCD interactions between quarks and gluons. As
lattice calculations of gA continue to push the boundaries of
precision, it is necessary to quantify and control all sources
of systematic errors (e.g. excited-state contamination and
finite-volume effects) associated with this framework. In this
talk I will outline our approach for the first lattice
determination of the axial coupling at the sub-percent level and
discuss gA in the context of low-energy precision tests of the
Standard Model.</div>
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Best,</div>
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Adam, Joe, and Pia</div>
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<span style="background-color: rgb(255, 255, 255);">--</span></div>
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Joe Karpie</div>
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Pronouns: He/His/Him</div>
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Postdoctoral Fellow</div>
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Theoretical and Computational Physics Center</div>
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Jefferson Lab</div>
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<pre wrap="" class="moz-quote-pre">_______________________________________________
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<pre class="moz-signature" cols="72">--
Pia Leonie Jones Petrak
Postdoctoral Fellow
Theoretical and Computational Physics Center
Jefferson Lab</pre>
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