First results for charm physics with a tmQCD valence action

Authors: A. Bussone, G. Herdoiza, C. Pena, D. Preti, J.A. Romero, J. Ugarrio

We present preliminary results in the charm sector from a mixed-action setup, in which CLS Nf = 2 + 1 ensembles are combined with a Wilson twisted mass valence action. We study the continuum and chiral limits of charm quark observables such as the decay constants fD(s) and the renormalized charm-quark mass.