Dark matter from the scalar sector of 3-3-1 models without exotic electric charges

Details Dark matter from the scalar sector of 3-3-1 models without exotic electric charges Dark matter from the scalar sector of 3-3-1 models without exotic electric charges

2005-09-16

arxiv.org/abs/hep-ph/0509173v3

Europhys.Lett. 73 (2006) 142-148

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 11 pages. v2: typos corrected, one reference added. v3: clarifications added, four more references added. To appear in

Scientific paper

10.1209/epl/i2005-10349-x

We show 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)_c X SU(3)_L X U(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.

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