Summary
The groupSU 4 is probably the most straightforward and economical generalization ofSU 3 which allows for basic triplets of integral charges. In this paper we analyse in detail the predictions of a few models for strong interactions based ouSU 4. In addition to the usual (nonpeculiar) eightfold-way particles new peculiar particles are predicted. However they can be allowed to be created and to decay semi-strongly by the mass-breaking interactions. Mass relations are obtained. It is pointed out that some difficulties concerning these mass formulae occur when one tries to attribute the ρ, K*, ω and ϕ vector mesons to the regular representation ofSU 4.
Riassunto
Il gruppo SU3 è probabilmente la più diretta ed economica generalizzazione diSU 3 che permetta le formazioni di tripletti basici di cariche intere. Nel presente lavoro si analizza dettagliatamente qualche modello d’interazioni forti basate sull’SU 4. In aggiunta alla solite particelle a otto canali (non specifiche) si predicono nuove particelle specifiche. Tuttavia le interazioni che spezzano la massa consentono loro di nascere e di decadere con reazioni semiforti. Si ottengono relazioni di massa. Si rileva che per quanto riguarda queste formole di massa si ha qualche difficoltà quando si cerca di attribuire i mesoni vettoriali ρ, K*, ω e ϕ alla rappresentazione regolare diSU 4.
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Amati, D., Bacry, H., Nuyts, J. et al. SU 4 and strong interactions. Nuovo Cim 34, 1732–1750 (1964). https://doi.org/10.1007/BF02750568
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DOI: https://doi.org/10.1007/BF02750568