Topological Dark Matter in the Little Higgs Models

Details Topological Dark Matter in the Little Higgs Models Topological Dark Matter in the Little Higgs Models

2009-05-17

arxiv.org/abs/0905.2772v2

Phys.Rev.D80:074009,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure; minor numerical error fixed

Scientific paper

10.1103/PhysRevD.80.074009

We show that certain little Higgs models with symmetry breaking SU(N) -> SO(N) for N >= 4 admit topologically stable solitons that may contribute to cosmological dark matter. We have constructed a spherically symmetric soliton and estimated its mass in the case of SU(5) -> SO(5). Its lower bound is found to be around 10.3 TeV. Whether this particle is a fermion or a boson depends on the value of an integer-valued parameter of the underlying theory, analogous to the number of colors of QCD. In either case, the particle is neutral. If it is a fermion, it is a Majorana particle, which could take part in a seesaw mechanism for neutrino masses.

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