Inflationary imprints on dark matter

We show that dark matter abundance and the inflationary scale H could be intimately related. Standard Model extensions with Higgs mediated couplings to new physics typically contain extra scalars displaced from vacuum during inflation. If their coupling to Standard Model is weak, they will not therm...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2015-11, Vol.2015 (11), p.1-1
Main Authors: Nurmi, Sami, Tenkanen, Tommi, Tuominen, Kimmo
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COSMOLOGICAL INFLATION
DENSITY
GEV RANGE
HIGGS BOSONS
HIGGS MODEL
INFLATIONARY UNIVERSE
MASS
NONLUMINOUS MATTER
SCALARS
STANDARD MODEL
SYMMETRY
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Summary:We show that dark matter abundance and the inflationary scale H could be intimately related. Standard Model extensions with Higgs mediated couplings to new physics typically contain extra scalars displaced from vacuum during inflation. If their coupling to Standard Model is weak, they will not thermalize and may easily constitute too much dark matter reminiscent to the moduli problem. As an example we consider Standard Model extended by a Z{sub 2} symmetric singlet s coupled to the Standard Model Higgs Φ via λ Φ{sup †}Φ s{sup 2}. Dark matter relic density is generated non-thermally for λ ∼ 10{sup −9} and m{sub s}∼
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2015/11/001