Spin-3/2 Baryons in Lattice QCD

Details Spin-3/2 Baryons in Lattice QCD Spin-3/2 Baryons in Lattice QCD

2002-10-24

arxiv.org/abs/hep-lat/0210043v1

Nucl.Phys.Proc.Suppl.119:299-301,2003

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 2 figures, Lattice2002(QCD Spectrum and Quark Masses)

Scientific paper

10.1016/S0920-5632(03)01544-5

We present first results for masses of spin-3/2 baryons in lattice QCD, using a novel fat-link clover fermion action in which only the irrelevant operators are constructed using fat links. In the isospin-1/2 sector, we observe, after appropriate spin and parity projection, a strong signal for the J^P=3/2^- state, and find good agreement between the 1/2^+ mass and earlier nucleon mass simulations with a spin-1/2 interpolating field. For the isospin-3/2 Delta states, clear mass splittings are observed between the various 1/2^+/- and 3/2^+/- channels, with the calculated level orderings in good agreement with those observed empirically.

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