# Simplified TeV leptophilic dark matter in light of DAMPE data

Journal of High Energy Physics, Feb 2018

Abstract 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 P ⊗ S, P ⊗ P , V ⊗ A and V ⊗ V 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, V ⊗V 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+ℓ−, and muon g − 2 anomaly. Finally, we present a possible U(1) X realization for such leptophilic dark matter.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1007%2FJHEP02%282018%29107.pdf

Guang Hua Duan, Lei Feng, Fei Wang, Lei Wu, Jin Min Yang, Rui Zheng. Simplified TeV leptophilic dark matter in light of DAMPE data, Journal of High Energy Physics, 2018, 107, DOI: 10.1007/JHEP02(2018)107