Definition of $\tan \beta$ beyond tree-level

Abstract

We study the relation between different renormalization schemes for the parameter $\tan \beta$ in the Minimal Supersymmetric Standard Model. The contributions of the third-generation quark-squark loops to the differences between $\tan \beta$'s in several schemes are discussed. Their numerical differences are typically within several %.

6 pages, LaTeX, uses epsfig.sty, talk at 1996 Annual Divisional Meeting (DPF'96) of the Division of Particles and Fields of the American Physical Society, Minneapolis, MN, Aug 10-15, 1996