Asymmetric dark matter models in SO(10)

Natsumi Nagata, Keith A. Olive, Jiaming Zheng

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We systematically study the possibilities for asymmetric dark matter in the context of non-supersymmetric SO(10) models of grand unification. Dark matter stability in SO(10) is guaranteed by a remnant ℤ2 symmetry which is preserved when the intermediate scale gauge subgroup of SO(10) is broken by a 126 dimensional representation. The asymmetry in the dark matter states is directly generated through the out-of-equilibrium decay of particles around the intermediate scale, or transferred from the baryon/lepton asymmetry generated in the Standard Model sector by leptogenesis. We systematically classify possible asymmetric dark matter candidates in terms of their quantum numbers, and derive the conditions for each case that the observed dark matter density is (mostly) explained by the asymmetry of dark matter particles.

Original languageEnglish (US)
Article number016
JournalJournal of Cosmology and Astroparticle Physics
Volume2017
Issue number2
DOIs
StatePublished - Feb 9 2017

Bibliographical note

Funding Information:
This work was supported in part by DOE grant DE-SC0011842 at the University of Minnesota.

Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab srl.

Keywords

  • baryon asymmetry
  • dark matter theory
  • leptogenesis
  • particle physics-cosmology connection

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