Curing Sterile Neutrino Dark Matter with a Dark Force
December 28, 2022
We propose a novel mechanism to generate sterile neutrinos
$\nu_s$ in the early Universe, by converting ordinary neutrinos
$\nu_a$ in scattering processes $\nu_s\nu_a\to\nu_s\nu_s$.
After initial production by oscillations, this leads to an exponential
growth in the $\nu_s$ abundance. We show that such a production regime
naturally occurs for self-interacting $\nu_s$, and that this opens up
significant new parameter space where $\nu_s$ make up all of the
observed dark matter.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.