Mixed Dark Matter from Neutrino Lasing

Details Mixed Dark Matter from Neutrino Lasing Mixed Dark Matter from Neutrino Lasing

1993-12-10

arxiv.org/abs/astro-ph/9312020v1

Astrophys.J. 434 (1994) 12-23

Astronomy and Astrophysics

Astrophysics

23 pages, latex, CITA/93/49, available by anon ftp from ftp.cita.utoronto.ca in /cita/nick/neutrinolasing2.ps

Scientific paper

10.1086/174700

We investigate the production of dark matter with non-standard momentum distributions arising from the decay of a relativistic massive neutrino into a lighter fermion and boson H$\rightarrow$F$+$B. We develop the Boltzmann equations for this process, paying particular attention to spin polarisation effects. Such decays can, under certain circumstances, lead to a process of runaway stimulated decays or `neutrino-lasing' resulting, for suitable boson mass, in the production of mixed-dark-matter. We discuss a number of variations on the model; we show how the yield of cold particles can be increased by a simple modification to our original proposal. We discuss the singlet-majoron model as a possible framework for these decays.

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