Muon g-2 and precision electroweak physics in the MSSM

Abstract

The minimal supersymmetric extension of standard model (MSSM) is examined by analyzing its quantum effects on the precision electroweak measurements and the muon g-2. We examine carefully the effects of light charginos and neutralinos that are found to improve the fit to the electroweak data. We identify two distinct regions on the $(\mu ,M_2)$-plane that fit well to the electroweak data and give significant contribution to muon g-2.

Comments: 13 pages, LaTeX2e, 6 eps-formated figures, remarks on b to s gamma, references and acknowledgement added, accepted for publication in Phys. Lett. B