Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point
(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.
(Less)
- author
- organization
- publishing date
- 2023-04-06
- 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}}, }