Leptogenesis origin of Dirac gaugino dark matter

Abstract

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.

9 pages. Restructured for clear presentation, corrected some errors and typos. No change in conclusion

References in corpus (12)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Leptogenesis
• Asymmetric Dark Matter
• Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
• Flavor in Supersymmetry with an Extended R-symmetry
• Darkogenesis
• Color-Octet Scalars of N=2 Supersymmetry at the LHC
• Axino dark matter from Q-balls in Affleck-Dine baryogenesis and the ${\Omega }_b-{\Omega }_{DM}$ coincidence problem
• Testing the Majorana Nature of Gluinos and Neutralinos
• Pseudo-Dirac Bino Dark Matter
• The study of sq_L sq_L production at LHC in the l^\pm l^\pm channel and sensitivity to other models
• Dark Matter in split extended supersymmetry

Cited by in corpus (4)

• Asymmetric Dark Matter from Leptogenesis
• Aidnogenesis via Leptogenesis and Dark Sphalerons
• A Unified Theory of Matter Genesis: Asymmetric Freeze-In
• Minimal Dark Matter and Leptogenesis