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Galactic Centre GeV Photons from Dark Technicolor · Around

2014

Galactic Centre GeV Photons from Dark Technicolor

Heikinheimo, Matti, Spethmann, Christian

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We present a classically scale-invariant model with a confining dark sector, which is coupled to the Standard Model through the Higgs portal.

The galactic centre gamma ray excess can be explained in this model by collision-induced dark matter decays to b-quarks.
We discuss the possibility to obtain the dark matter relic density through thermal freeze-out, which however requires excessive fine-tuning.
We then instead focus on a freeze-in scenario and perform detailed calculations and a parameter scan.

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