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arXiv · 2207.10492

First row CKM unitarity

Chien-Yeah Seng
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Abstract

In this talk I briefly review the precision test of the first row CKM unitarity, focusing mainly on $V_{ud}$ and $V_{us}$ extracted from pion, kaon, neutron and superallowed nuclear beta decays. I will discuss the current status of several important Standard Model theory inputs to these processes, and the need for future improvements.

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Chien-Yeah Seng. 2022-07-21. First row CKM unitarity. https://arxiv.org/abs/2207.10492

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