Journal of High Energy Physics

, 2018:107 | Cite as

Simplified TeV leptophilic dark matter in light of DAMPE data

  • Guang Hua Duan
  • Lei Feng
  • Fei Wang
  • Lei WuEmail author
  • Jin Min Yang
  • Rui Zheng
Open Access
Regular Article - Theoretical Physics


Using a simplified framework, we attempt to explain the recent DAMPE cosmic e+ + e flux excess by leptophilic Dirac fermion dark matter (LDM). The scalar (Φ0) and vector (Φ1) mediator fields connecting LDM and Standard Model particles are discussed. We find that the couplings PS, PP , VA and VV can produce the right bump in e+ + e flux for a DM mass around 1.5 TeV with a natural thermal annihilation cross-section < σv >∼ 3×10−26cm3/s today. Among them, VV coupling is tightly constrained by PandaX-II data (although LDM-nucleus scattering appears at one-loop level) and the surviving samples appear in the resonant region, \( {m_{\varPhi}}_{{}_1}\simeq 2{m}_{\chi } \). We also study the related collider signatures, such as dilepton production pp → Φ1 → ℓ+, and muon g − 2 anomaly. Finally, we present a possible U(1) X realization for such leptophilic dark matter.


Phenomenological Models 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Department of Physics and Institute of Theoretical PhysicsNanjing Normal UniversityNanjingChina
  2. 2.CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of SciencesBeijingChina
  3. 3.School of Physical SciencesUniversity of Chinese Academy of SciencesBeijingChina
  4. 4.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of SciencesNanjingChina
  5. 5.School of PhysicsZhengzhou UniversityZhengzhouChina
  6. 6.Department of PhysicsTohoku UniversitySendaiJapan
  7. 7.Department of PhysicsUniversity of CaliforniaDavisU.S.A.

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