出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study baryons on the lattice with a special focus on excited states. For that purpose we construct
several interpolators which differ in their Dirac structure. These interpolators are built from
Jacobi smeared quarks with different widths in order to allow for operators with improved spatial
wavefunctions. We compute all cross correlations and use the variational method to determine
which combinations of operators have best overlap with ground and excited states. Our approach
yields promising results for the spin- 1
2 baryons: nucleon, S, X and L. For the spin- 3
2 baryons, D
and W, we obtain results which are consistent with results of other groups.
