Unstable particles and the large- and small-scale dark-matter problems

Details Unstable particles and the large- and small-scale dark-matter problems Unstable particles and the large- and small-scale dark-matter problems

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34..934d&link_type=abstract

Physical Review D (Particles and Fields), Volume 34, Issue 4, 15 August 1986, pp.934-939

Mathematics

Logic

8

Elementary Particle Processes

Scientific paper

We consider cosmological models in which the mass of the Universe is dominated by unstable weakly interacting particles (X) with lifetime on the order of the age of the Universe. In our picture the mass of galaxies and clusters is dominated by undecayed X particles while the Universe is closed in the large by their relativistic decay products. Quantitative results are given based on Turner's equations for evolution in the presence of dominant unstable particles. Several possibilities for the X particle are considered. Lifetimes are calculated within these scenarios and shown to be close to those required.

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