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arXiv · hep-ph/0612286

A Dark Matter Candidate from an Extra (Non-Universal) Dimension

Marco Regis·Marco Serone·Piero Ullio
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Abstract

We show that a recently constructed five-dimensional (5D) model with gauge-Higgs unification and explicit Lorentz symmetry breaking in the bulk, provides a natural dark matter candidate. This is the lightest Kaluza-Klein particle odd under a certain discrete Z_2 symmetry, which has been introduced to improve the naturalness of the model, and resembles KK-parity but is less constraining. The dark matter candidate is the first KK mode of a 5D gauge field and electroweak bounds force its mass above the TeV scale. Its pair annihilation rate is too small to guarantee the correct relic abundance; however coannihilations with colored particles greatly enhance the effective annihilation rate, leading to realistic relic densities.

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Marco Regis, Marco Serone, Piero Ullio. 2007-03-06. A Dark Matter Candidate from an Extra (Non-Universal) Dimension. https://doi.org/10.1088/1126-6708%2F2007%2F03%2F084

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