We present production and decay distributions for the reaction vp-~ix m pir + with M^+ p < 1.4 GeV. This reaction is primarily vp-~ii~A ++ 9 but we find evidence for the presence of non-A amplitudes for Q 2 > 1 GeV 2 . The data are fitted by various theoretical models. For Q 2 < 1 GeV 2 the best fit yields the value M A =1.25t §;}| GeV, using a dipole-nucleon axial-vector form factor in Adler's model, although none of these models successfully reproduces the observed A-decay distributions.

We present results from the Fermilab 15-ft bubble chamber on the charged-partiele multiplicity distributions produced in high-energy charged-current neutrino-proton interactions. Comparisons are made to yp, ep, up, and inclusive/)/) scattering. The mean hadronic multiplicity (n c ) appears to depend only on the mass of the excited hadronic state, independent of the mode of excitation. A fit to the neutrino data gives (n c ) = (1.09 ± 0.38) + (1.09 ± 0.03) InW 2 .

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