Il Nuovo Cimento (1955-1965)

, Volume 16, Issue 2, pp 230–240 | Cite as

On the symmetries of strong and weak interactions

  • F. Gürsey


A model of strong interactions is proposed which admits a group (G4×H) in the limit of a suitably defined doublet approximation,G4 being a 4-dimensional extension of the isotopic spin group andH the hypercharge gauge group. Weak interactions having phenomenological chirality invariance properties or obeying the ΔI=1/2 rule are shown to be invariant under an unitary subgroup of the group (G4×H).


Si propone per le interazioni forti un modello che, nei limiti di un’approssimazione di doppietto opportunamente definita, ammette un gruppo (G4×H), essendoG4 una estensione quadridimensionale del gruppo di spin isotopico eH il gruppo di gauge dell’ipercarica. Si dimostra che le interazioni deboli, che abbiano proprietà fenomenologiche d’invarianza della chiralità o obbediscano alla regola ΔI=1/2, sono invarianti rispetto a un sottogruppo unitario del gruppo (G4×H).


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Copyright information

© Società Italiana di Fisica 1960

Authors and Affiliations

  • F. Gürsey
    • 1
  1. 1.Brookhaven National LaboratoryUpton

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