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Article Dans Une Revue Physical Review D Année : 2015

Dark matter and gauge coupling unification in nonsupersymmetric SO(10) grand unified models

Natsumi Nagata
  • Fonction : Auteur
Keith A. Olive
  • Fonction : Auteur
Jiaming Zheng
  • Fonction : Auteur
Keith Olive
  • Fonction : Auteur
Jérémie Quevillon

Résumé

Unlike minimal SU(5), SO(10) provides a straightforward path towards gauge coupling unification by modifying the renormalization group evolution of the gauge couplings above some intermediate scale which may also be related to the seesaw mechanism for neutrino masses. Unification can be achieved for several different choices of the intermediate gauge group below the SO(10) breaking scale. In this work, we consider in detail the possibility that SO(10) unification may also provide a natural dark matter candidate, stability being guaranteed by a leftover $Z_2$ symmetry. We systematically examine the possible intermediate gauge groups which allow a non-degenerate, fermionic, Standard Model singlet dark matter candidate while at the same time respecting gauge coupling unification. Our analysis is done at the two-loop level. Surprisingly, despite the richness of SO(10), we find that only two models survive the analysis of phenomenological constraints, which include suitable neutrino masses, proton decay, and reheating.

Dates et versions

hal-02886249 , version 1 (01-07-2020)

Identifiants

Citer

Yann Mambrini, Natsumi Nagata, Keith A. Olive, Jiaming Zheng, Keith Olive, et al.. Dark matter and gauge coupling unification in nonsupersymmetric SO(10) grand unified models. Physical Review D, 2015, 91, pp.095010. ⟨10.1103/PhysRevD.91.095010⟩. ⟨hal-02886249⟩
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