511 keV line from Q balls in the Galactic Center

Details 511 keV line from Q balls in the Galactic Center 511 keV line from Q balls in the Galactic Center

2005-08-18

arxiv.org/abs/astro-ph/0508391v2

Phys.Rev.D72:085015,2005

Astronomy and Astrophysics

Astrophysics

5 pages, published version

Scientific paper

10.1103/PhysRevD.72.085015

The 511 keV photons from the galactic center can be explained by positrons produced through Q-ball decay. In the scheme of gauge-mediated supersymmetry breaking, large Q balls with lepton charge are necessarily long-lived. In particular, the lifetime can be as long as (or even longer than) the age of the universe. If kinematically allowed, such large Q balls decay into positrons, which eventually annihilate with electrons into 511 keV photons. Our scenario is realized within the minimal supersymmetric standard model in the inflationary universe, which is very plausible.

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