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Electroweak interaction; gauge theory; strangeness-changing charged current; charm-changing neutral current; quarks; leptons; intermediate bosons

We construct a model of renormalizable electroweak interaction with (V+A) strangeness-changing charged current in the framework of the minimal spontaneously broken SU₂ ⊗ U₁ gauge theory, taking our motivation from the recently reported measurement of the electron asymmetry in polarizedΣ⁻-hyperonβ-decay by Keller and co-workers. The model avoids strangeness-changing but admits charm-changing pieces in the neutral current. Several phenomenological consequences of the model are discussed together with a comparison with the standard model of electroweak interaction.

L K Pandit¹

1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay - 400 005, India

Published

October 1982

Manuscript received

9 June 1982