par Dürr, H.P. H.P.;Géhéniau, Jules 
Référence Il Nuovo cimento, 28, 1, page (132-164)
Publication Publié, 1963-04
Référence Il Nuovo cimento, 28, 1, page (132-164)
Publication Publié, 1963-04
Article révisé par les pairs
| Résumé : | In the nonlinear theory of elementary particles by Heisenberg and coworkers it was suggested that the observed deviations from isotopic spin symmetry in the interactions of elementary particles may result from a degeneracy of the vacuum with respect to isotopic spin. The vacuum in this formalism can be imagined as an infinite Lorentz, CPT and GP-invariant sea of spurions. Strange particles occur in such a theory in the form of particles which are closely coupled to one or more spurions. To test this hypothesis about the vacuum, especially with respect to its group-theoretical assumptions on the spurions, we investigate in the present paper as a simple model a nucleon Dirac equation which is modified through the addition of nucleon-spurion or nucleon-two spurion interaction terms which are possible under the stated symmetry requirements. The model allows the definition of the concept « strangeness », and leads to definite predictions as to the existence and mass sequence of strange particles of strangeness ±1 and ±2, and their relative parities. The absolute-mass values of these particles depend on certain coupling parameters, which have to be introduced from the beginning, and cannot be calculated within the framework of this model. © 1963 Società Italiana di Fisica. |
