A 331 WIMPy dark radiation model
In: The European Physical Journal C, Jg. 74, Heft 3
Online
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Zugriff:
Recent observations suggest that the number of relativistic degrees of freedom in the early universe might exceed what is predicted in the standard cosmological model. If even a small, percent-level fraction of dark matter particles are produced relativistically, they could mimic the effect of an extra realistic species at matter-radiation equality while obeying BBN, CMB and Structure Formation bounds. We show that this scenario is quite naturally realized with a weak-scale dark matter particle and a high-scale ``mother'' particle within a well motivated 3-3-1 gauge model, which is particularly interesting for being consistent with electroweak precision measurements, with recent LHC results, and for offering a convincing explanation for the number of generations in the Standard Model.
10 pages,7 figures. Matches Published EPJC version
Titel: |
A 331 WIMPy dark radiation model
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Autor/in / Beteiligte Person: | Queiroz, Farinaldo S. ; P. S. Rodrigues da Silva ; C. A. de S. Pires ; Profumo, Stefano ; Kelso, Chris |
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Zeitschrift: | The European Physical Journal C, Jg. 74, Heft 3 |
Veröffentlichung: | Springer Nature |
Medientyp: | unknown |
ISSN: | 1434-6044 (print) |
DOI: | 10.1140/epjc/s10052-014-2797-3 |
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