Chiral Effective Field Theories with explicit Spin 3/2 Degrees of Freedom---A Status Report

Abstract

Recent developments in calculations of low energy nucleon properties utilizing effective chiral field theories with explicit spin 3/2 matter fields are presented. In particular, the role of Delta resonances in microscopic calculations of the anomalous magnetic moments of the Nucleon is discussed and a comparison to lattice data is performed. Furthermore, the impact of Deltas on the isovector Pauli form factor of the Nucleon and the problems one faces in calculations of the isovector Nucleon-Delta transition form factors are addressed.Comment: 8 pages, Latex, 5 eps figures, uses World Scientific style ws-p8-50x6-00.cls; talk given at NSTAR01, Mainz, German