Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point

Peter Boyle, Matteo Di Carlo*, Felix Erben, Vera Gülpers, Maxwell T. Hansen, Tim Harris, Nils Hermansson-Truedsson*, Raoul Hodgson, Andreas Jüttner, Fionn HÓgáin, Antonin Portelli*, James Richings, Andrew Z.N. Yong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

We report on the physical-point RBC/UKQCD calculation of the leading isospin-breaking corrections to light-meson leptonic decays. This is highly relevant for future precision tests in the flavour physics sector, in particular the first-row unitarity of the Cabibbo-Kobayashi-Maskawa matrix containing the elements Vus and Vud. The simulations were performed using Domain-Wall fermions for 2 + 1 flavours, and with isospin-breaking effects included perturbatively in the path integral through order α and (mu - md)/ΛQCD. We use QEDL for the inclusion of electromagnetism, and discuss here the non-locality of this prescription which has significant impact on the infinite-volume extrapolation.

Original languageEnglish
Title of host publicationProceedings of Science
PublisherSissa Medialab Srl
Pages1-10
Number of pages10
Volume430
DOIs
Publication statusPublished - 6 Apr 2023
Event39th International Symposium on Lattice Field Theory, LATTICE 2022 - Bonn, Germany
Duration: 8 Aug 202213 Aug 2022
Conference number: 39
https://pos.sissa.it/cgi-bin/reader/family.cgi?code=lattice

Publication series

NameProceedings of Science
PublisherSissa Medialab Srl
ISSN (Print)1824-8039

Conference

Conference39th International Symposium on Lattice Field Theory, LATTICE 2022
Country/TerritoryGermany
CityBonn
Period8/08/2213/08/22
Internet address

Fingerprint

Dive into the research topics of 'Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point'. Together they form a unique fingerprint.

Cite this