We present RBC/UKQCD's charm project using Nf=2+1 flavour ensembles with inverse lattice spacings in the range 1.73−2.77GeV and two physical pion mass ensembles. Domain wall fermions are used for the light as well as the charm quarks. We discuss our strategy for the extraction of the decay constants fD and fDs and their extrapolation to the continuum limit, physical pion masses and the physical heavy quark mass. Our preliminary results are fD=208.7(2.8)MeV and fDs=246.4(1.9)MeV where the quoted error is statistical only. We outline our current approach to extend the reach in the heavy quark mass and present preliminary results.
@article{arxiv.1611.06804,
title = {Charm Physics with Domain Wall Fermions and Physical Pion Masses},
author = {Peter Boyle and Luigi Del Debbio and Andreas Jüttner and Ava Khamseh and Francesco Sanfilippo and Justus Tobias Tsang and Oliver Witzel},
journal= {arXiv preprint arXiv:1611.06804},
year = {2016}
}