Ds spectrum and leptonic decays with Fermilab heavy quarks and improved staggered light quarks
Massimo di Pierro, Aida X. El-Khadra, Steven Gottlieb, Andreas S. Kronfeld, Paul B. Mackenzie, Damian P. Menscher, Masataka Okamoto, James N. Simone
Abstract
We present preliminary results for the Ds meson spectrum and decay constants in unquenched lattice QCD. Simulations are carried out with 2+1 dynamical quarks using gauge configurations generated by the MILC collaboration. We use the ``asqtad'' a2 improved staggered action for the light quarks, and the clover heavy quark action with the Fermilab interpretation. We compare our spectrum results with the newly discovered 0+ and 1+ states in the Ds system.
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