Baryogenesis via Leptogenesis in Adjoint SU(5)

Abstract

The possibility to explain the baryon asymmetry in the Universe through the leptogenesis mechanism in the context of Adjoint SU(5) is investigated. In this model the neutrino masses are generated through the Type I and Type III seesaw mechanisms, and the field responsible for the Type III seesaw, called rho_3, generates the B-L asymmetry needed to satisfy the observed value of the baryon asymmetry in the Universe. We find that the CP asymmetry originates only from the vertex correction, since the self-energy contribution is not present. When neutrino masses have a normal hierarchy, successful leptogenesis is possible for 10^{11} GeV < M_{ρ_3}^{NH} < 4 10^{14} GeV. When the neutrino hierarchy is inverted, the allowed mass range changes to 2 10^{11} GeV < M_{ρ_3}^{IH} < 5 10^{11} GeV. These constraints make possible to rule out a large part of the parameter space in the theory which was allowed by the unification of gauge interactions and the constraints coming from proton decay.

15 pages, 3 figures, minor corrections, to appear in JCAP

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Cited by in corpus (20)

• Leptogenesis in the Universe
• Probing Leptogenesis
• GUT Physics in the era of the LHC
• Grand Unification and Light Color-Octet Scalars at the LHC
• Renormalization group evolution of neutrino masses and mixing in the Type-III seesaw mechanism
• Phenomenology of SUSY SU(5) with type I+III seesaw
• Implications of Flavor Dynamics for Fermion Triplet Leptogenesis
• Adjoint SU(5) GUT model with Modular $S_4$ Symmetry
• SUSY SU(5) with singlet plus adjoint matter and A4 family symmetry
• $\nu$-GMSB with Type III Seesaw and Phenomenology
• The QCD Axion and Unification
• Adjoint $SU(5)$ GUT model with $T_7$ flavor symmetry
• The minimal adjoint-SU(5)xZ_4 GUT model
• Leptogenesis in $E_6\times U(1{)}_A$ SUSY GUT model
• New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5)
• A left-right symmetric model with SU(2)-triplet fermions
• Neutrino Masses and Leptogenesis from Extra Fermions
• Freed Leptogenesis
• Probing Seesaw in an Adjoint SUSY SU(5) Model at LHC
• Question for SU(5) x SU(5) string unification