Charmed baryons from lattice QCD

Abstract

The results of a recent quenched lattice QCD simulation for charmed baryons are presented. In contrast to a previous calculation, it is found that hyperfine splittings are in agreement with quark model expectations and comparable to experimental values. Preliminary calculations using lattice NRQCD yield results which are compatible with those obtained using a Dirac-Wilson action of the D234 type for the charm quark.

Comments: 5 pages, 4 eps figures. Presented at the IVth International Conference on Hyperons, Charm and Beauty Hadrons, Valencia, Spain, June 27-30, 2000