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arXiv · 0911.3373

Excited-Nucleon Spectroscopy with 2+1 Fermion Flavors

Saul Cohen·John M. Bulava·Justin Foley·Colin Morningstar·Ricky Wong·Robert G. Edwards·Balint Joo·David G. Richards·K. Jimmy Juge·Huey-Wen Lin·Nilmani Mathur·Michael J. Peardon·Sinead M. Ryan
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Abstract

We present progress made by the Hadron Spectrum Collaboration (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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Saul Cohen, John M. Bulava, Justin Foley, Colin Morningstar, Ricky Wong, Robert G. Edwards, Balint Joo, David G. Richards, K. Jimmy Juge, Huey-Wen Lin, Nilmani Mathur, Michael J. Peardon, Sinead M. Ryan. 2009-11-17. Excited-Nucleon Spectroscopy with 2+1 Fermion Flavors. https://arxiv.org/abs/0911.3373

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