Lepton asymmetries from neutrino oscillations

Details Lepton asymmetries from neutrino oscillations Lepton asymmetries from neutrino oscillations

2000-09-14

arxiv.org/abs/hep-ph/0009162v1

Nucl.Phys.Proc.Suppl. 91 (2000) 487-493

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 embedded figures, uses espcrc2.sty. Invited talk at Neutrino 2000 (to appear in the Proceedings)

Scientific paper

10.1016/S0920-5632(00)00979-8

Reasonably large relic neutrino asymmetries can be generated by active-sterile neutrino oscillations. After briefly discussing possible applications, I describe the Quantum Kinetic Equation formalism used to compute the asymmetry growth curves. I then show how the basic features of these curves can be understood on the basis of the adiabatic limit approximation in the collision dominated epoch, and the pure MSW effect at lower temperatures.

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