Search for right handed coupling in nu -N scattering

The relative absence of {bar {nu}}{sub {mu}}-induced charged current events with respect to {nu}{sub {mu}}-induced events at large ({gt}0.45) and large {ital y} ({gt}0.70) enables us to limit the right handed coupling of the weak current. Our data restrict {vert bar}{eta}{vert bar}{sup 2}={vert bar}{ital g}{sub {ital R}}/{ital g}{sub {ital L}}{vert bar}{sup 2}{lt}0.0 015 with 90% C.L. Within the framework of left-right symmetric models, this measurement imposes a limit upon the mixing angle of the left and right handed bosons. Unlike the limits imposed by the {mu}-decay and nuclear {beta}-decay experiments, our limit is valid irrespective of the mass of the right handed neutrino.