Scalar dark matter, Type II Seesaw and the DAMPE cosmic ray $e^{+}+e^{-}$ excess

Abstract

The DArk Matter Particle Explorer (DAMPE) has reported a measurement of the flux of high energy cosmic ray electrons plus positrons (CREs) in the energy range between $25$ GeV and $4.6$ TeV. With unprecedented high energy resolution, the DAMPE data exhibit an excess of the CREs flux at an energy of around $1.4$ TeV. In this letter, we discuss how the observed excess can be understood in a minimal framework where the Standard Model (SM) is supplemented by a stable SM singlet scalar as dark matter (DM) and type II seesaw for generating the neutrino mass matrix. In our framework, a pair of DM particles annihilates into a pair of the SM SU(2) triplet scalars ($\Delta$s) in type II seesaw, and the subsequent $\Delta$ decays create the primary source of the excessive CREs around $1.4$ TeV. The lepton flavor structure of the primary source of CREs has a direct relationship with the neutrino oscillation data. We find that the DM interpretation of the DAMPE excess determines the pattern of neutrino mass spectrum to be the inverted hierarchy type, taking into account the constraints from the Fermi-LAT observations of dwarf spheroidal galaxies.

6 pages, 2 figures, to be published in PLB

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Cited by in corpus (26)

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• Multi-Component Dark Matter in a Non-Abelian Dark Sector
• TeV dark matter and the DAMPE electron excess
• Flavor Structure of the Cosmic-Ray Electron/Positron Excesses at DAMPE
• Explaining the DAMPE $e^{+}{e}^{-}$ excess using the Higgs triplet model with a vector dark matter
• Electron Flavored Dark Matter
• DAMPE squib? Significance of the 1.4 TeV DAMPE excess
• Prospects of type-II seesaw at future colliders in light of the DAMPE $e^{+}{e}^{-}$ excess
• Explain DAMPE Results by Dark Matter With Hierarchical Lepton-Specific Yukawa Interactions
• The DAMPE excess and gamma-ray constraints
• EFT analysis of leptophilic dark matter at future electron-positron colliders in the mono-photon and mono-$Z$ channels
• Scalar dark matter explanation of the DAMPE data in the minimal Left-Right symmetric model
• Confronting the DAMPE Excess with the Scotogenic Type-II Seesaw Model
• DAMPE excess from decaying right-handed neutrino dark matter
• Two-mediator dark matter models and cosmic electron excess
• Indirect effects of dark matter
• Probing Flavor Structure of Cosmic Ray $e^{\mp }$ Spectrum and Implications for Dark Matter Indirect Searches
• Type II Seesaw with scalar dark matter in light of AMS-02, DAMPE and Fermi-LAT
• A radiative neutrino mass model in light of DAMPE excess with hidden gauged $U(1)$ symmetry
• Interpretation of the cosmic ray positron and electron excesses with an annihilating-decaying dark matter scenario
• Neutrinos from the Sun can discover dark matter-electron scattering
• Dark matter annihilation into leptons through gravity portals
• Confronting cosmic ray electron and positron excesses with hybrid triplet Higgs portal dark matter
• Multicomponent Dark Matter in the Light of CALET and DAMPE
• Scalar dark matter with $Z_3$ symmetry in Type-II Seesaw