Speaker
Sara Collins
(University of Regensburg)
Description
The $D$ and $D_s$ decay constants are important inputs
for the determination of the CKM matrix elements $V_{cd}$ and $V_{cs}$
and precision tests of the Standard Model. With lattice determinations
of these quantities reaching the sub-percent level, it is important
to demonstrate control over all sources of systematic uncertainty, and
in particular, those arising from disretisation effects and the quark
mass dependence. We present results obtained from 49 ensembles (including two ensembles at the physical point) which span 6 lattice spacings in the range $0.039\text{ fm}\le a \le 0.1\text{ fm}$ and lie on three trajectories in the quark mass plane.
Primary author
Sara Collins
(University of Regensburg)
