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The Spectrum of Darkonium in the Sun | | Chris Kouvaris
; Kasper Langaeble
; Niklas Grønlund Nielsen
; | | Date: |
1 Jul 2016 | | Abstract: | Dark matter that gets captured in the Sun may form positronium-like bound
states if it self-interacts via light dark photons. In this case, dark matter
can either annihilate to dark photons or recombine in bound states which
subsequently also decay to dark photons. The fraction of the dark photons that
leave the Sun without decaying to Standard Model particles have a
characteristic energy spectrum which is a mixture of the direct annihilation
process, the decays of ortho- and para- bound states and the recombination
process. The ultimate decay of these dark photons to positron-electron pairs
(via kinetic mixing) outside the Sun creates a distinct signal that can either
identify or set strict constraints on dark photon models. | | Source: | arXiv, 1607.0374 | | Services: | Forum | Review | PDF | Favorites | |
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