Work

Semileptonic kaon decays and the precise determination of Vus

Year: 2025

Type: conference-paper

Abstract: I will give a brief overview of the Standard Model theory inputs needed for the precise determination of the Cabibbo-Kobayashi-Maskawa matrix element $V_{us}$ from semileptonic kaon decays, focusing on the long-distance electromagnetic corrections. I will then describe our recent effort to pin down this correction at sub-permille level, which further sharpens the so-called ``Cabibbo angle anomaly'', an interesting observation which may point towards new physics.

Source: International Workshop on Chiral Dynamics (CD)

DOI: 10.22323/1.479.0024

Author: Chien Yeah Seng

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: U.S. Department of Energy, Office of Science, Nuclear Physics

Awards: G2029232352, G222768804, FRIB THEORY CENTER - A PATH FOR THE SCIENCE AT FRIB, G4713271130, NUCLEAR THEORY, FRIB THEORY CENTER - A PATH FOR THE SCIENCE AT FRIB, NUCLEAR THEORY, NUCLEAR THEORY

OpenAlex ID: W4408918655

FWCI:

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