Self-interacting dark matter with naturally light mediator
Abstract
A promising proposal for resolving the cusp-core anomaly in the density profile of dwarf galaxies is to allow dark matter to interact with itself through a light mediator of mass much less than a GeV. The theoretical challenge is to have a complete renormalizable theory where this happens naturally even though dark matter itself may be of the electroweak scale, i.e. 100 GeV to 1 TeV. I propose here such a model with just two neutral complex scalar singlets under a softly broken dark global U(1) symmetry.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- February 2017
- DOI:
- 10.1142/S0217732317500389
- arXiv:
- arXiv:1608.08277
- Bibcode:
- 2017MPLA...3250038M
- Keywords:
-
- Self-interacting dark matter;
- softly broken dark global U(1) symmetry;
- generalized lepton number;
- 11.30.Fs;
- 11.30.Qc;
- 95.35.+d;
- Global symmetries;
- Spontaneous and radiative symmetry breaking;
- Dark matter;
- High Energy Physics - Phenomenology;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 11 pages, 5 figures (discussion added)