Strange Particles and the Conservation of Isotopic Spin

Abstract

The question is considered as to whether complete rotational symmetry in isotopic spin space is necessary. In particular, the classification of elementary particles on the basis of the representations of a finite group is attempted. It is found that for the particles whose reactions are known, the law of conservation of charge results in a scheme essentially equivalent with ones previously proposed. However, some additional freedom is found which would accommodate particles with rather unusual properties if such are ever observed.