Some Consequences of Symmetries of the Strong Interactions
- 1 August 1959
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 115 (3), 745-749
- https://doi.org/10.1103/physrev.115.745
Abstract
The consequences for the electromagnetic interactions of strange particles of some proposed symmetries of the strong interactions are discussed. A minimal electromagnetic coupling is assumed. It is shown that if the interactions with both and mesons of the nucleon and cascade particle are identical, if one neglects the mass difference, and if charge independence is satisfied, then the electromagnetic from factors of the and , and in particular their magnetic moments, vanish. This is independent of any assumed relation between the and interactions, such as global symmetry. It is also shown that the same conditions, together with charge conjugation invariance, imply a generalized form of the Pais-Jost-Pugh theorem about processes involving only meson or photon external lines. If there is still more symmetry for the strong interactions, as in the case where the interactions are globally symmetric and the interactions also have this doublet structure, it is shown that the acts as a completely neutral particle insofar as electromagnetic interactions are concerned.
Keywords
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