Mirror matter and heavy singlet neutrino oscillations in the early universe

Details Mirror matter and heavy singlet neutrino oscillations in the early universe Mirror matter and heavy singlet neutrino oscillations in the early universe

2000-03-09

arxiv.org/abs/hep-ph/0003072v1

Phys.Lett. B479 (2000) 257-264

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(00)00319-1

We investigate the mixing of heavy gauge singlet neutrinos in a mirror matter model employing the seesaw mechanism. The parameter constraints that must be satisfied to prevent the overproduction of mirror matter in the early universe are deduced. We find that no fine tuning in the heavy neutral fermion sector is required for this mirror matter model to satisfy cosmological constraints. Baryogenesis scenarios are briefly discussed in the context of the mirror model.

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