Lattice QCD determination of states with spin 5/2 or higher in the spectrum of nucleons

Details Lattice QCD determination of states with spin 5/2 or higher in the spectrum of nucleons Lattice QCD determination of states with spin 5/2 or higher in the spectrum of nucleons

2006-09-26

arxiv.org/abs/hep-lat/0609052v1

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 2 figures

Scientific paper

Energies for excited isospin 1/2 states that include the nucleon are computed using quenched, anisotropic lattices. Baryon interpolating field operators that are used include nonlocal operators that provide $G_2$ irreducible representations of the octahedral group. The decomposition of spin 5/2 or higher states is realized for the first time in a lattice QCD calculation. We observe patterns of degenerate energies in the irreducible representations of the octahedral group that correspond to the subduction of the continuum spin 5/2 or higher.

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