Speaker
Zack Hall
(Lawrence Berkeley National Laboratory)
Description
We present a determination for the ratio of light and D meson decay constants in lattice QCD. This work employs a new four flavor Möbius Domain Wall fermion action with 30 ensembles across five lattice-spacings, multiple volumes, and a range of pion mass down to the physical point. In this talk we will discuss our calculation and extrapolation analyses, giving $F_{K^{\pm}}/F_{\pi^{\pm}}$ = 1.1962(34), along with preliminary results for $F_{D_s}/F_{D}$ which are both key inputs for precision tests of CKM unitarity.
Authors
Dr
Renwick Hudspith
(Carnegie Mellon University)
Dr
Nicolas Garron
(Liverpool Hope University)
Zack Hall
(Lawrence Berkeley National Laboratory)
Dr
Andrew Hanlon
(Kent State University)
Dr
Colin Morningstar
(Carnegie Mellon University)
Dr
Amy Nicholson
(The University of North Carolina at Chapel Hill)
Dr
Dimitra Pefkou
(Lawrence Berkeley National Laboratory)
Dr
Thomas Richardson
(University of California Berkeley)
Dr
Fernando Romero-López
(University of Bern)
Dr
Miguel Salg
(University of Bern)
Dr
Wyatt Smith
(The College of William and Mary)
Dr
Pavlos Vranas
(Lawrence Livermore National Laboratory)
Andre Walker-Loud
(Lawrence Berkeley National Laboratory)
Dr
Bigeng Wang
(Lawrence Berkeley National Laboratory)