Dark matter from the scalar sector of 3-3-1 models without exotic electric charges
Abstract
It is shown that three SU(2) singlet neutral scalars (two CP-even and one CP-odd) in the spectrum of models based on the gauge symmetry SU(3)cotimesSU(3)LotimesU(1)X, which do not contain exotic electric charges, are realistic candidates for thermally generated self-interacting dark matter in the Universe, a type of dark matter that has been recently proposed in order to overcome some difficulties of collisionless cold-dark-matter models at the galactic scale. These candidates arise without introducing a new mass scale in the model and/or without the need for a discrete symmetry to stabilize them, but at the expense of tuning several combinations of parameters of the scalar potential.
- Publication:
-
EPL (Europhysics Letters)
- Pub Date:
- January 2006
- DOI:
- 10.1209/epl/i2005-10349-x
- arXiv:
- arXiv:hep-ph/0509173
- Bibcode:
- 2006EL.....73..142F
- Keywords:
-
- 95.35.+d;
- 12.60.Fr;
- 14.80.Cp;
- Dark matter;
- Extensions of electroweak Higgs sector;
- Non-standard-model Higgs bosons;
- High Energy Physics - Phenomenology
- E-Print:
- RevTeX, 11 pages. v2: typos corrected, one reference added. v3: clarifications added, four more references added. To appear in Europhys. Lett