Incorporating chiral symmetry in extrapolations of octet baryon magnetic moments

We explore methods of extrapolating lattice calculations of hadronic observ ables to the physical regime, while respecting the constraints of chiral sy mmetry and heavy quark effective theory. In particular, we extrapolate latt ice results for magnetic moments of the spin-1/2 baryon octet to the physic al pion mass and compare with experimental measurements. The success previo usly reported for extrapolations of the nucleon magnetic moments carries ov er to the Sigma baryons. A study of the residual discrepancies in the Xi ba ryon moments suggests that it is important to have new simulation data with a more realistic strange quark mass. (C) 2000 Elsevier Science B.V. All ri ghts reserved.