Projects per year
Abstract
We investigate the physics of dark matter models featuring composite bound states carrying a large conserved dark “nucleon” number. The properties of sufficiently large dark nuclei may obey simple scaling laws, and we find that this scaling can determine the number distribution of nuclei resulting from Big Bang Dark Nucleosynthesis. For plausible models of asymmetric dark matter, dark nuclei of large nucleon number, e.g. ≳ 10^8, may be synthesised, with the number distribution taking one of two characteristic forms. If smallnucleonnumber fusions are sufficiently fast, the distribution of dark nuclei takes on a logarithmicallypeaked, universal form, independent of many details of the initial conditions and smallnumber interactions. In the case of a substantial bottleneck to nucleosynthesis for small dark nuclei, we find the surprising result that even larger nuclei, with size ≫ 10^8, are often finally synthesised, again with a simple number distribution. We briefly discuss the constraints arising from the novel dark sector energetics, and the extended set of (often parametrically light) dark sector states that can occur in complete models of nuclear dark matter.
Original language  English 

Article number  11 
Pages (fromto)  128 
Number of pages  28 
Journal  Journal of High Energy Physics 
Volume  2015 
DOIs  
Publication status  Published  3 Jun 2015 
Keywords
 Beyond Standard Model
 Cosmology of Theories beyond the SM
Projects
 1 Finished

Theoretical Particle Physics Consortium Sussex – Royal Holloway 20142017
West, S. (PI) & Kauer, N. (PI)
Science and Technology Facilities Council
1/10/14 → 30/09/17
Project: Research