[Theory-seminars] Theory Seminar TODAY - Chien-Yeah Seng

[Colin Egerer]

Hello All,

Today at 1:00 PM (EDT), Chien-Yeah Seng will give our next hybrid theory seminar. We want to highlight that this seminar is one of the ODU + JLab joint position interviews. If you will be on-site and are comfortable doing so, please join us in room L102 of CEBAF Center. Otherwise, Chien-Yeah's seminar will also be provided virtually on our usual ZoomGov link: https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09

Please see below for the title and abstract.

Theory Seminar
Wednesday, March 29th at 1:00 PM

Chien-Yeah Seng (Michigan State and University of Washington)
will discuss "Nuclear physics in Vud"

Abstract:
The experimental determination of the first-row Cabibbo-Kobayashi-Maskawa (CKM) matrix element Vud has reached an impressive 0.03% level, serving as one of the most powerful tests of the Standard Model (SM) at low energies. In recent years, an apparent deficit of the first-row CKM matrix unitarity at the level of 3 sigma is observed, which provides possible indications of New Physics. The major obstacles to a confirmed discovery are the hadronic and nuclear theory uncertainties in the SM inputs that enter the Vud extraction. In this seminar I will describe how a combination of experimental data, lattice QCD and ab-initio nuclear theory calculations could ultimately pin down these inputs, and how we may benefit from current and future experimental programs at Jefferson Lab.

Best Regards,
Caroline, Colin, & Patrick
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