The Weinberg neutral current is incorporated into several quark-parton models in order to investigate the neutral-current-induced neutrino and antineutrino cross sections. The results are rather insensitive to the particular model, provided a good fit is made to the charged-current data. Typically, the σ^νσ^ν ratio for the neutral-current reactions can be considerably larger than 1/3 for sin²θW0.25. Minima of 0.20 and 0.38 occur in the neutral-current to charged-current cross-section ratios for neutrino and antineutrino reactions, respectively.
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Carl H. Albright (1973) studied this question.
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