Photons from Dark Matter in a (non-Universal) Extra Dimension model

Details Photons from Dark Matter in a (non-Universal) Extra Dimension model Photons from Dark Matter in a (non-Universal) Extra Dimension model

2008-03-05

arxiv.org/abs/0803.0631v2

Phys.Lett.B663:250-254,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 6 figures; title modified, 1 reference added

Scientific paper

10.1016/j.physletb.2008.03.070

We study the multi-wavelength signal induced by pairs annihilations at the Galactic center (GC) of a recently proposed dark matter (DM) candidate. The weakly interacting massive particle (WIMP) candidate, named A_, is the first Kaluza-Klein mode of a five dimensional Abelian gauge boson. Electroweak precision tests and the DM cosmological bound constrain its mass and pair annihilation rate in small ranges, leading to precise predictions of indirect signals from what concerns the particle physics side. The related multi-wavelength emission is expected to be faint, unless a significant enhancement of the DM density is present at the GC. We find that in this case, and depending on few additional assumptions, the next generation of gamma-ray and wide-field radio observations can test the model, possibly even with the detection of the induced monochromatic gamma-ray emission.

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