Journal Article

GSI-2021-00670

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.GSI*HIM* ; Jin, L.-C. ; Meißner, U.-G.

2020
SISSA [Trieste]

This record in other databases:

Please use a persistent id in citations: doi:10.1007/JHEP10(2020)179  doi:10.15120/GSI-2021-00670

Report No.: arXiv:2009.00459

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 |V$_{us}$| and the top-row Cabibbo-Kobayashi-Maskawa matrix unitarity.

Keyword(s): effect: electromagnetic ; perturbation theory: chiral ; meson: semileptonic decay ; pi: semileptonic decay ; CKM matrix: unitarity ; lattice field theory ; anomaly ; Chiral Lagrangians ; Kaon Physics ; Lattice QCD ; Precision QED

Note: This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0). Funded by SCOAP3

---

Contributing Institute(s):

1. HIM / THFL (MTH)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. STRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093) (824093)

Experiment(s):

1. (Facility Altdaten therefore no facility)

Appears in the scientific report 2021

---

Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---