DAMPE Electron-Positron Excess in Leptophilic $Z^{\prime }$ model

Abstract

Recently the DArk Matter Particle Explorer (DAMPE) has reported an excess in the electron-positron flux of the cosmic rays which is interpreted as a dark matter particle with the mass about $1.5$ TeV. We come up with a leptophilic $Z^{\prime }$ scenario including a Dirac fermion dark matter candidate which beside explaining the observed DAMPE excess, is able to pass various experimental/observational constraints including the relic density value from the WMAP/Planck, the invisible Higgs decay bound at the LHC, the LEP bounds in electron-positron scattering, the muon anomalous magnetic moment constraint, Fermi-LAT data, and finally the direct detection experiment limits from the XENON1t/LUX. By computing the electron-positron flux produced from a dark matter with the mass about $1.5$ TeV we show that the model predicts the peak observed by the DAMPE.

18 pages, 7 figures, matches with the published version

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• Flavor Structure of the Cosmic-Ray Electron/Positron Excesses at DAMPE
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• Explain DAMPE Results by Dark Matter With Hierarchical Lepton-Specific Yukawa Interactions
• Scalar dark matter explanation of the DAMPE data in the minimal Left-Right symmetric model
• EFT analysis of leptophilic dark matter at future electron-positron colliders in the mono-photon and mono-$Z$ channels
• DAMPE excess from decaying right-handed neutrino dark matter
• Light vector dark matter with scalar mediator and muon g-2 anomaly
• Two-mediator dark matter models and cosmic electron excess
• 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
• Two-photon exchange in leptophilic dark matter scenarios
• Multicomponent Dark Matter in the Light of CALET and DAMPE