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

Boyle, Peter ; Di Carlo, Matteo ; Erben, Felix ; Gülpers, Vera ; Hansen, Maxwell T. ; Harris, Tim ; Hermansson-Truedsson, Nils LU orcid ; Hodgson, Raoul ; Jüttner, Andreas and HÓgáin, Fionn , et al. (2023) 39th International Symposium on Lattice Field Theory, LATTICE 2022 In Proceedings of Science 430.
Abstract

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... (More)

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.

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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
The 39th International Symposium on Lattice Field Theory (LATTICE2022)
series title
Proceedings of Science
volume
430
article number
411
conference name
39th International Symposium on Lattice Field Theory, LATTICE 2022
conference location
Bonn, Germany
conference dates
2022-08-08 - 2022-08-13
external identifiers
  • scopus:85153225346
ISSN
1824-8039
DOI
10.22323/1.430.0411
language
English
LU publication?
yes
id
097ac601-1993-49e9-9ee4-f1a82f65b18a
date added to LUP
2023-08-03 15:45:37
date last changed
2023-08-03 15:45:37
@inproceedings{097ac601-1993-49e9-9ee4-f1a82f65b18a,
  abstract     = {{<p>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 V<sub>us</sub> and V<sub>ud</sub>. 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 (m<sub>u</sub> - m<sub>d</sub>)/Λ<sub>QCD</sub>. We use QED<sub>L</sub> for the inclusion of electromagnetism, and discuss here the non-locality of this prescription which has significant impact on the infinite-volume extrapolation.</p>}},
  author       = {{Boyle, Peter and Di Carlo, Matteo and Erben, Felix and Gülpers, Vera and Hansen, Maxwell T. and Harris, Tim and Hermansson-Truedsson, Nils and Hodgson, Raoul and Jüttner, Andreas and HÓgáin, Fionn and Portelli, Antonin and Richings, James and Yong, Andrew Z.N.}},
  booktitle    = {{The 39th International Symposium on Lattice Field Theory (LATTICE2022)}},
  issn         = {{1824-8039}},
  language     = {{eng}},
  month        = {{04}},
  series       = {{Proceedings of Science}},
  title        = {{Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point}},
  url          = {{http://dx.doi.org/10.22323/1.430.0411}},
  doi          = {{10.22323/1.430.0411}},
  volume       = {{430}},
  year         = {{2023}},
}