2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188968We present preliminary results for the D_s meson spectroscopy study on the 2+1 flavour domain wall fermion lattice configurations, generated with the Iwasaki gauge action at beta=2.13 by the RBC-UKQCD collaboration. The simulations are on 16^3\times32 lattice with L_s=16. We consider the charm quark propagating as an overlap fermion at fixed lattice spacing. The dispersion relation and mass splittings are evaluated.7 pages, 9 figures. Talk presented at XXIVth International Symposium on Lattice Field Theory, July 23-28, 2006, Tuscon, Arizona, USAHigh Energy Physics - Latticetext