Journal Article

FZJ-2021-00147

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png New method for calculating electromagnetic effects in semileptonic beta-decays of mesons

Seng, C.-Y. (Corresponding author) ; Feng, X. ; Gorchtein, M. ; Jin, L.-C. ; Meißner, U.-G.FZJ*

2020
SISSA [Trieste]

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Please use a persistent id in citations: http://hdl.handle.net/2128/26714  doi:10.1007/JHEP10(2020)179

Abstract: We construct several classes of hadronic matrix elements and relate them to the low-energy constants in Chiral Perturbation Theory that describe the electromagnetic effects in the semileptonic beta decay of the pion and the kaon. We propose to calculate them using lattice QCD, and argue that such a calculation will make an immediate impact to a number of interesting topics at the precision frontier, including the outstanding anomalies in |Vus| and the top-row Cabibbo-Kobayashi-Maskawa matrix unitarity.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)

Appears in the scientific report 2020

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Database coverage:
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