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The intermediate boson — unitary triplet or octet

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Il Nuovo Cimento (1955-1965)

Summary

Within the framework of unitary symmetry we discuss two possible versions of a weak intermediate vector boson theory corresponding to a triplet and an octet model, respectively. The former has the advantage that it affords the basis for a possible explanation of the large mass of the intermediate boson in terms of strong interactions but it also requires the use of the fullU 3 group and not simply itsSU 3 subgroup. The latter can be accomodated within the existingSU 3 octet scheme. Both versions lead to the same effective four-fermion interaction for normal weak processes but may be distinguished by observation of the production cross-sections and decay modes of the intermediate bosons.

Riassunto

Si discutono, nello schema della simmetria unitaria, due possibili versioni di una teoria del bosone vettoriale intermedio debole corrispondenti rispettivamente ad un modello di tripletto e ad uno di ottetto. Il primo ha il vantaggio che dà la base per una possibile spiegazione della grande massa del bosone intermedio in funzione delle interazioni forti ma esige anche Fuso dell’intero gruppo U3 e non del solo suo sottogruppo SU3. Il seoondo può essere sistemato entro lo schema dell’esistente ottetto8U3. Entrambe le versioni portano alla stessa effettiva interazione di quattro fermioni per i normali processi deboli ma possono essere distinte con l’osservazione delle sezioni efficaoi di produzione e dei modi di decadimento del bosone intermedio.

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Ryan, C., Okubo, S. & Marshak, R.B. The intermediate boson — unitary triplet or octet. Nuovo Cim 34, 753–758 (1964). https://doi.org/10.1007/BF02750014

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