$|V_{ud}|$, $|V_{us}|$, $|V_{cd}|$, $|V_{cs}|$ and charm (semi)leptonic decays: WG1 summary from CKM 2016

TL;DR

This paper reviews the latest precise measurements of CKM matrix elements |V_ud|, |V_us|, |V_cd|, and |V_cs|, focusing on their determination through leptonic and semileptonic charm decays, highlighting recent progress and current status.

Contribution

It provides a comprehensive summary of recent experimental and theoretical advancements in determining key CKM matrix elements from charm decays and leptonic processes.

Findings

CKM matrix elements |V_ud| and |V_us| are now determined with high precision.

Recent progress has improved the understanding of charm semileptonic decays.

The current status of |V_cd| and |V_cs| measurements is summarized.

Abstract

We summarize the current status of the determination of the CKM matrix elements |V_ud| and |V_us|, which is at the precision frontier of CKM phenomenology. We also review recent progress on the study of charm (semi)leptonic decays, and the determination of |V_cd| and |V_cs|.