Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses

Autor: Peter Boyle, Matteo Di Carlo, Felix Erben, Vera Gülpers, Maxwell T. Hansen, Tim Harris, Nils Hermansson-Truedsson, Raoul Hodgson, Andreas Jüttner, Fionn Ó hÓgáin, Antonin Portelli, James Richings, Andrew Zhen Ning Yong

Publikováno v: Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-66 (2023)

Abstract The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller than O(1%), require theoretical calculations to include subl

Externí odkaz: https://doaj.org/article/961e1e9c233a4dcc994e0574c44098f9

The $I$ = 1/2 and 3/2 $K-\pi$ scattering length with domain wall fermions at physical pion mass with all-to-all propagators

Autor: Rajnandini Mukherjee, Nils Asmussen, Felix Erben, Jonathan Flynn, Andreas Jüttner, Christopher Sachrajda

We present our calculations for the $I$ = 1/2 and 3/2 $K-\pi$ s-wave scattering length with physical quark masses, extracted from the interaction energy of Euclidean two-point functions. We use the domain wall fermion action with physical quark masse

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38dfddf7747a20ec28b398dcfaa746c6
http://cds.cern.ch/record/2849040

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

Autor: Nils Hermansson-Truedsson, Peter Boyle, Matteo Di Carlo, Felix Erben, Vera Gülpers, Maxwell Hansen, Tim Harris, Raoul Hodgson, Andreas Jüttner, Fionn Ó hÓgáin, Antonin Portelli, James Richings, Andrew Zhen Ning Yong

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::349cda13e9c0450dee960ad45343942a
http://arxiv.org/abs/2212.04709

Semileptonic $D \rightarrow \pi \ell \nu$, $D \rightarrow K \ell \nu$ and $D_s \rightarrow K \ell \nu$ decays with 2+1f domain wall fermions

Autor: Michael Marshall, Peter Boyle, Luigi Del Debbio, Felix Erben, Jonathan Flynn, Andreas Juttner, Antonin Portelli, J Tobias Tsang, Oliver Witzel

Publikováno v: Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)

We present the status of our project to calculate $D \to \pi \ell \nu$, $D \to K \ell \nu$ and $D_s \to K \ell \nu$ semileptonic form factors using domain wall fermions for both heavy and light quarks. Our computations are performed using RBC/UKQCD's

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::217024607bbbb750d6c362d48fa9ecab
http://arxiv.org/abs/2201.02680

An exploratory study of heavy-light semileptonic form factors using distillation

Autor: Antonin Portelli, Peter Boyle, Michael Marshall, Justus Tobias Tsang, Felix Erben, Fionn Ó hÓgáin

Publikováno v: Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)
Boyle, P, Erben, F, Marshall, M, Ó hÓgáin, F, Portelli, A & Tsang, J T 2020, ' An exploratory study of heavy-light semileptonic form factors using distillation ', Proceedings of Science, vol. 363, 169 . https://doi.org/10.22323/1.363.0169

We present our exploratory study with the aim of simulating heavy-light semileptonic form factors as part of the RBC-UKQCD charm (to bottom) physics programme. We are using a distillation-based setup as a strategy to get optimised plateaus in semilep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b89e91441a3759399142619a4da46760