Impact of inert higgsino dark matter

We consider a recently proposed supersymmetric radiative seesaw model which is coupled with the minimal supergravity. The conventional R parity and Z2 invariance are imposed, which ensures the existence of a multi-component dark matter system. We assume that the pair of the lightest neutralino χ˜ an...

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Published inPhysics letters. B Vol. 707; no. 1; pp. 107 - 115
Main Authors Aoki, Mayumi, Kubo, Jisuke, Okawa, Taishi, Takano, Hiroshi
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier B.V 16.01.2012
Elsevier
Subjects
Dark matter
Decay
Elementary particles
Exact sciences and technology
Higgs bosons
Inert
Nuclear physics
Parity
Physics
Scalars
The physics of elementary particles and fields
LHC collider
Supermultiplets
Dark matter
Supersymmetric field theory
Higgs bosons
Invariance
Neutralino
Parity
Supergravity
Symmetry breaking
Gaugino
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Summary:We consider a recently proposed supersymmetric radiative seesaw model which is coupled with the minimal supergravity. The conventional R parity and Z2 invariance are imposed, which ensures the existence of a multi-component dark matter system. We assume that the pair of the lightest neutralino χ˜ and the fermionic component ξ˜ of the inert Higgs supermultiplet is dark matter. If ξ˜ is lighter than χ˜, and the lightest neutral inert Higgs boson is kinematically forbidden to decay (third dark matter), the allowed region in the m0–M1/2 plane increases considerably, where m0 and M1/2 are the universal soft-supersymmetry-breaking scalar and gaugino mass, respectively, although the dominant component of the multi-component dark matter system is χ˜. There is a wide allowed region above the recent LHC limit.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2011.12.012