Monopoles, strings and dark matter

Details Monopoles, strings and dark matter Monopoles, strings and dark matter

2011-03-08

arxiv.org/abs/1103.1632v2

Phys.Rev.D83:123524,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, various improvements and additional references

Scientific paper

10.1103/PhysRevD.83.123524

We develop a scenario whereby monopoles in a hidden sector yield a decaying dark matter candidate of interest for the PAMELA and FERMI $e^\pm$ excesses. The monopoles are not completely hidden due to a very small kinetic mixing and a hidden photon mass. The latter also causes the monopoles and anti-monopoles to be connected by strings. The resulting long-lived objects eventually decay to hidden photons which tend to escape galactic cores before decaying. The mass scales are those of the hidden photon ($\approx 500$ MeV), the monopole ($\approx 3$ TeV) and the mixing scale (close to the Planck scale). A gauge coupling in the hidden sector is the only other parameter. This coupling must be strong and this results in light point-like monopoles and light thin strings.

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