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

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

Sammanfattning

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.

Originalspråkengelska
Titel på värdpublikationThe 39th International Symposium on Lattice Field Theory (LATTICE2022)
Volym430
DOI
StatusPublished - 2023 apr. 6
Evenemang39th International Symposium on Lattice Field Theory, LATTICE 2022 - Bonn, Tyskland
Varaktighet: 2022 aug. 82022 aug. 13

Publikationsserier

NamnProceedings of Science
FörlagSissa Medialab srl
ISSN (tryckt)1824-8039

Konferens

Konferens39th International Symposium on Lattice Field Theory, LATTICE 2022
Land/TerritoriumTyskland
OrtBonn
Period2022/08/082022/08/13

Ämnesklassifikation (UKÄ)

  • Subatomär fysik

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