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arXiv · 1412.6351

3.55 keV line in Minimal Decaying Dark Matter scenarios

Giorgio Arcadi·Laura Covi·Federico Dradi
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Abstract

We investigate the possibility of reproducing the recently reported $3.55\,\mbox{keV}$ line in some simple decaying dark matter scenarios. In all cases a keV scale decaying DM is coupled with a scalar field charged under SM gauge interactions and thus capable of pair production at the LHC. We will investigate how the demand of a DM lifetime compatible with the observed signal, combined with the requirement of the correct DM relic density through the freeze-in mechanism, impacts the prospects of observation at the LHC of the decays of the scalar field.

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Giorgio Arcadi, Laura Covi, Federico Dradi. 2014-12-19. 3.55 keV line in Minimal Decaying Dark Matter scenarios. https://doi.org/10.1088/1475-7516%2F2015%2F07%2F023

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