Explaining the DAMPE e+e- excess using the Higgs triplet model with a vector dark matter
Abstract
We explain the e+e- excess observed by the DAMPE Collaboration using a dark matter model based upon the Higgs triplet model and an additional hidden S U (2 )X gauge symmetry. Two of the S U (2 )X gauge bosons are stable due to a residual discrete symmetry and serve as the dark matter candidate. We search the parameter space for regions that can explain the observed relic abundance, and compute the flux of e+e- coming from a nearby dark matter subhalo. With the inclusion of background cosmic rays, we show that the model can render a good fit to the entire energy spectrum covering the AMS-02, Fermi-LAT, CALET and DAMPE data.
- Publication:
-
Physical Review D
- Pub Date:
- March 2018
- DOI:
- 10.1103/PhysRevD.97.061302
- arXiv:
- arXiv:1712.00793
- Bibcode:
- 2018PhRvD..97f1302C
- Keywords:
-
- High Energy Physics - Phenomenology;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 10 pages, 2 figures, version published in PRD