Leptogenesis origin of Dirac gaugino dark matter

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.053004· OSTI ID:21578169

Chun, Eung Jin ^[1]

---

1. Korea Institute for Advanced Study, Hoegiro 87, Dongdaemun-gu, Seoul 130-722 (Korea, Republic of)

The Dirac nature of the gauginos (and also the Higgsinos) can be realized in R-symmetric supersymmetry models. In this class of models, the Dirac bino (or wino) with a small mixture of the Dirac Higgsinos is a good dark matter candidate. When the seesaw mechanism with Higgs triplet superfields is implemented to account for the neutrino masses and mixing, the leptogenesis driven by the heavy triplet decay is shown to produce not only the matter-antimatter asymmetry, but also the asymmetric relic density of the Dirac gaugino dark matter. The dark matter mass turns out to be controlled by the Yukawa couplings of the heavy Higgs triplets, and it can be naturally at the weak scale for a mild hierarchy of the Yukawa couplings.

• OSTI ID: 21578169
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevD.83.053004; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIMATTER
ASYMMETRY
COUPLINGS
HIGGS BOSONS
HIGGS MODEL
MASS
NEUTRINOS
NONLUMINOUS MATTER
PARTICLE PRODUCTION
SUPERSYMMETRY
TRIPLETS
BOSONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MULTIPLETS
PARTICLE MODELS
POSTULATED PARTICLES
SYMMETRY