The Higgs Boson: Shall We See It Soon Or Is It Still Far Away?

Abstract

The status of the Higgs boson mass in the Standard Model and its supersymmetric extensions is reviewed and the perspectives of Higgs searches are discussed. The parameter space of the Minimal Supersymmetric Standard Model (MSSM) is analysed with the emphasis on the lightest Higgs mass. The infrared behaviour of renormalization group equations for the parameters of MSSM is examined and infrared quasi-fixed points are used for the Higgs mass predictions. They strongly suggest the Higgs mass to be lighter than 100 or 130 GeV for low and high $\tan\beta$ scenarios, respectively. Extended models, however, allow one to increase these limits for low $\tan\beta$ up to 50%.Comment: 13 pages, LaTex, 4 ps figures, Submitted to special issue of Phys.Reports dedicated to 70th birthday of L.B.Oku