Isolating the \Lambda(1405) in Lattice QCD
  The negative-parity ground state of the \Lambda{} baryon lies surprisingly low in mass. At 1405.1 MeV, it lies lower than the negative-parity ground state nucleon, even though it has a valence strange quark. Using the PACS-CS (2+1)-flavour full-QCD ensembles available through the ILDG, we employ a variational analysis using source and sink smearing to isolate this elusive state. We find three low-lying odd-parity states, and for the first time reproduce the correct level ordering with respect to the nearby scattering thresholds. 
Benjamin J. Menadue, Waseem Kamleh, Derek B. Leinweber, and M. Selim   Mahbub
hep-lat