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 JP= 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 Δ 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.
Mendeley saves you time finding and organizing research
Choose a citation style from the tabs below