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Recent neutrino-induced elastic and deep-inelastic neutral-current data are shown to impose stringent constraints on gauge models of weak interactions. For SU₂×{}U₁ models, assuming left-handed u and d quarks in a doublet, only the Weinberg-Salam model is in agreement with the data. SU₂×{}SU₂×{}U₁ and SU₃×{}U₁ models are also analyzed.
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Hendrick et al. (1979) studied this question.
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