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Warm Dark Matter from keVins
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2012 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 8, 016- p.Article in journal (Refereed) Published
Abstract [en]

We propose a simple model for Warm Dark Matte (WDM) in which two femions are added to the Standard,Model: (quasi-) stable "keVins" (keV inert fermions) which account for WDM and their unstable brothers, the "GeVins" (GeV inert fermions), both of which carry zero electric charge and zero lepton number, and are (approximately) "inert", in the sense that their only interactions are via suppressed couplings to the Z. We consider scenarios in which stable keVins are thermally produced and their abundance is subsequently diluted by entropy production from the decays of the heavier unstable GeVins. This mechanism could be implemented in a wide variety of models, including E-6 inspired supersymmetric models or models involving sterile neutrinos.

Place, publisher, year, edition, pages
2012. no 8, 016- p.
Keyword [en]
dark matter theory, cosmology of theories beyond the SM, cosmological neutrinos
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-105023DOI: 10.1088/1475-7516/2012/08/016ISI: 000308800700017OAI: oai:DiVA.org:kth-105023DiVA: diva2:570295
Funder
EU, FP7, Seventh Framework Programme, PIEF-GA-2011-297557
Note

QC 20121119

Available from: 2012-11-19 Created: 2012-11-15 Last updated: 2017-12-07Bibliographically approved

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