Magnetic dark matter for the X-ray line at 3.55 keV
We consider a decaying magnetic dark matter explaining the X-ray line at 3.55 keV shown recently from XMM-Newton observations. We introduce two singlet Majorana fermions that have almost degenerate masses and fermion–portal couplings with a charged scalar of weak scale mass. In our model, an approxi...
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| Format: | Article |
| Language: | English |
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Elsevier
2014-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269314006819 |