Antineutrino anomalies and right-handed currents

We analyze the predictions of several gauge-theory models for inclusive charged-current antineutrino reactions on isoscalar, proton, and neutron targets. In particular, we calculate y and W distributions, average y, B parameters, and cross-section ratios. Gauge models incorporating right-handed quark transitions of the type ub and dx are considered, where the heavy quarks b and x have charges -1/3 and -4/3, respectively. The effects of varying both the quark masses and the physical thresholds are examined. Experimental cuts and flux-averaging, where appropriate, are applied to the model predictions for the Fermilab counter and bubble-chamber experiments. We find that with reasonable choices of parameters, five- or six-quark models with valence-strength right-handed currents can fit most of the present experimental data to within one-standard-deviation accuracy.