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The unitary simmetry and a connection between the ¦δs¦≠1/2 and ¦δi¦ = 2 rules

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Il Nuovo Cimento (1955-1965)

Smumary

The assumption is made that the weak interactions are invariant under a three-dimensional rotation subgroup «G » ofSU 3, which of course is not the isospin subgroup. It is then shown that for non-leptonic and leptonic decays, the rule ¦ΔI¦ = 1/2 follows from the requirement ¦ΔS¦≠ 2 and vice-versa. In such a theory these selection rules are equivalent.

Riassunto

Si fa l’ipotesi che le interazioni deboli siano invarianti per un sottogruppo tridimensionale di rotazione «G » diSU 2, che non è, naturalmente, il sottogruppo dell’isospin. Si dimostra poi che per decadimenti leptonici e non leptonici, la legge ¦ΔI¦=1/2 dériva dalla condizione ¦ΔS¦ ≠ 2 e viceversa. In tale teoria queste leggi di selezione sono equivalenti.

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References

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On leave from Laboratoire de Physique Théorique et Hautes Energies, B.P. 12, Orsay.

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d’Espagnat, B., Prentki, J. The unitary simmetry and a connection between the ¦δs¦≠1/2 and ¦δi¦ = 2 rules. Nuovo Cim 24, 497–507 (1962). https://doi.org/10.1007/BF02751359

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  • DOI: https://doi.org/10.1007/BF02751359

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