New LEP constraints on some supersymmetric Yukawa interactions that violate R-parity

Abstract

We consider one-loop corrections to partial widths of the $Z$ induced by supersymmetric Yukawa interactions that violate $R$-parity. The precise experimental values of the leptonic $Z$ partial widths bound these Yukawa couplings, with the most interesting constraints being those on couplings involving the $\tau$, since previous constraints on them were very mild.

LaTeX, 11 pages, 3 figures (1a, 1b, 2), uses axodraw.sty which is included along with the figures as a uuencoded, compressed file appended at the end of the Latex file.

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