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“School of Particles And Accelerator”

Paper   IPM / Particles And Accelerator / 15785
   School of Particles and Accelerator
  Title: DAMPE Electron-Positron Excess in Leptophilic Z′ model
  Author(s):
1 . Karim Ghorbani
2 . Hossein Ghorbani
  Status: Published
  Journal: JHEP
  No.: 125
  Vol.: 05
  Year: 2018
  Supported by: IPM
  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′ 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.


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