Elementary particle physics and cosmology: Current status and prospects

Abstract

The current state of elementary particle physics can be briefly summarised as follows: the Standard Model of elementary particles is perfectly (at the level of radiation effects!) adequate in describing all available experimental data except for recent indications of neutrino oscillations. At the same time, much (and possibly most) of today's cosmology is not encompassed by the Standard Model - a fact which, together with intrinsic theoretical difficulties and the neutrino oscillation challenge, strongly indicates that the Standard Model is incomplete. It is expected that in the decade to come a 'new physics', i. e., particles and interactions beyond the Standard Model, will be discovered. Major advances in cosmology, both in terms of qualitatively improved observation and the theoretical analysis of the structure and evolution of the Universe, are expected as well.