R_b Problem: Loop Contributions and Supersymmetry

preprint1996arXivOpen access

Abstract

I summarize a part of the work done with Bamert, Burgess, London and Nardi (hep-ph/9602438) in which we find simplified expressions for the possible one-loop contributions to the RbR_b parameter from new virtual particles, including supersymmetric ones. Our expressions make it easier to identify which models and choices of parameters are best able to solve the RbR_b problem.

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