Matrix elements and baryon spectroscopy from unquenched lattice QCD with   improved staggered quarks
  We look for the effect of open decay channels on the masses of baryons in unquenched lattice QCD. We apply variational smearing using fuzzed basis states to a staggered nucleon operator. The signal for the s_bar s current in the nucleon is studied. The lattice calculations are done using improved staggered fermions. 
Eric B. Gregory, Alan C. Irving, Craig McNeile, Steven Miller, Zbyszek   Sroczynski