Extracting Low-Lying Lambda Resonances Using Correlation Matrix   Techniques
  The lowest-lying negative-parity state of the Lambda is investigated in (2+1)-flavour full-QCD on the PACS-CS configurations made available through the ILDG. We show that a variational analysis using multiple source and sink smearings can extract a state lying lower than that obtained by using a standard fixed smeared source and sink operator alone. 
Benjamin J. Menadue, Waseem Kamleh, Derek B. Leinweber, M. S. Mahbub
hep-lat