Baryon spectroscopy in lattice QCD with spin identification

Lattice QCD calculations are presented for the spectra of N* excited states with spins up to J = 7/2. The lattice operators and analysis methods used to identify the continuum spins in the lattice calculations are reviewed. In simulations with m? ? 392 MeV, the low-lying excited states of lattice QC...

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Bibliographic Details
Main Authors: Edwards, R. G., Dudek, J. J., Richards, D. G., Wallace, S. J.
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:Lattice QCD calculations are presented for the spectra of N* excited states with spins up to J = 7/2. The lattice operators and analysis methods used to identify the continuum spins in the lattice calculations are reviewed. In simulations with m? ? 392 MeV, the low-lying excited states of lattice QCD are found to have the same quantum numbers as the states of SU(6) {Theta}O(3) symmetry. The lattice spectra are inconsistent with either a quark-diquark model or parity doubling of states.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3701185