Saul Cohen, John M. Bulava, Justin Foley, Colin Morningstar,Ricky Wong, Robert G. Edwards, Balint Joo, David G. Richards, Eric Engelson, Stephen J. Wallace, K. Jimmy Juge, Huey-Wen Lin, Nilmani Mathur, Michael J. Peardon, Sinead M. Ryan, Excited-Nucleon Spectroscopy with 2+1 Flavour Fermions, Proceedings of Science, 27th International Symposium on Lattice Field Theory (Lattice 2009), Beijing, 25-31 July, 2009, C. Liu and Y. Zhu., LAT2009, 2009, 112 - 119
We present progressmade by the Hadron SpectrumCollaboration (HSC) in determining the tower
of excited nucleon states using 2+1-flavor anisotropic clover lattices. The HSC has been investigating
interpolating operators projected into irreducible representations of the cubic group in
order to better calculate two-point correlators for nucleon spectroscopy; results are published for
quenched and 2-flavor anisotropic Wilson lattices. In this work, we present the latest results using
a new technique, distillation, which allows us to reach higher statistics than before. Future
directions will be outlined at the end.
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