Publications
Publication Information
| Title | FK/Fp from Mobius Domain-Wall fermions solved on gradient-flowed HISQ ensembles |
| Authors | Nolan Miller, Henry Monge-Camacho, Chia Cheng Chang, Ben Horz, Enrico Rinaldi, Dean Howarth, Evan Berkowitz, David Brantley, Arjun Singh Gambhir, Christopher Korber, M. Clark, Balint Joo, T. Kurth, Amy Nicholson, K. Orginos, Pavlos Vranas, A Walker-Loud |
| JLAB number | JLAB-THY-20-3192 |
| LANL number | arXiv:2005.04795 |
| Other number | DOE/OR/23177-4967 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 102 Page(s) 034507 Refereed | |
| Publication Abstract: | We report the results of a lattice QCD calculation of FK/F? using M¨obius Domain-Wall fermions computed on gradient-flowed Nf = 2 + 1 + 1 HISQ ensembles. The calculation is performed with five values of the pion mass ranging from 130 . m? . 400 MeV, four lattice spacings of a ? 0.15, 0.12, 0.09 and 0.06 fm and multiple values of the lattice volume. The interpolation/extrapolation to the physical pion and kaon mass point, the continuum, and infinite volume limits are performed with a variety of different extrapolation functions utilizing both the relevant mixed-action effective field theory expressions as well as discretization-enhanced continuum chiral perturbation theory formulas. We find that the a ? 0.06 fm ensemble is helpful, but not necessary to achieve a sub-percent determination of FK/F?. We also include an estimate of the strong isospin breaking corrections and arrive at a final result of FK? + /F??+ = 1.1942(45) with all sources of statistical and systematic uncertainty included. This is consistent with the FLAG average value, providing an important benchmark for our lattice action. Combining our result with experimental measurements of the pion and kaon leptonic decays leads to a determination of |Vus|/|Vud| = 0.2311(10). |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.102.034507 |
| Accepted Manuscript: | PhysRevD.102.034507.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |