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Paper   IPM / Particles / 16293
School of Particles and Accelerator
  Title:   DAMPE excess from leptophilic vector dark matter: a model-independent approach
  Author(s): 
1.  S. Y Ayazi
2.  A Mohamadnejad
  Status:   Published
  Journal: J. Phys. G: Nucl. Part. Phys
  Year:  2020
  Supported by:  IPM
  Abstract:
We study all extensions of the Standard Model (SM) with a vector dark matter (VDM) candidate which can explain the peak structure observed by recent DAMPE experiment in electron-positron cosmic ray spectrum. In this regard, we consider all leptophilic renormalizable VDM-SM interactions through scalar, spinor, and vector mediators. We show that only two out of six possible models could produce DAMPE signal by annihilation of VDM with the mass about 1.5 TeV in a nearby subhalo whilst simultaneously satisfying constraints from DM relic density, direct/indirect detection, and the collider bounds. These two models are the ones with scalar/pseudoscalar mediator ϕ with Mϕ∈[1500,3000] GeV

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