The Problem of the Quark-Lepton Mass Spectrum

Abstract

We review some approaches to the quark-lepton mass problem. The ideas of mass-protection and approximate chiral flavour symmetries as a framework for resolving the mass hierarchy problem are presented. Dynamical calculations of the top quark and Higgs particle masses, based on infra-red fixed points and the so-called multiple point principle respectively, are discussed. We also consider mass matrix texture and the neutrino mass puzzle.

Comments: uuencoded 10 page LaTeX file; to appear in the Proceedings of the International Workshop on What comes beyond the Standard Model, Bled, Slovenia 29 June - 9 July 1998