Decay-Produced Neutrino Hot Dark Matter

Abstract

We investigate different types of neutrino hot dark matter with respect to structure formation and anisotropies in the cosmic microwave background radiation (CMBR). The possibility of neutrino hot dark matter produced through the decay of a heavier neutrino by the process nu_H -> nu_L + phi, where phi is a scalar particle, is discussed in detail. This type of dark matter can possibly be distinguished observationally from the standard neutrino dark matter by using new CMBR data from the upcoming satellite missions MAP and PLANCK.

To appear in Phys. Rev. Letters

References in corpus (3)

• Decaying Neutrinos and Large Scale Structure Formation
• Tau Neutrino Decays and Big Bang Nucleosynthesis
• A Cosmological Three Level Neutrino Laser

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