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arXiv · 2006.09553

Note on Thermalization of Non-resonantly Produced Sterile Neutrinos

Graciela B. Gelmini·Philip Lu·Volodymyr Takhistov
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Abstract

Using an analytic treatment, we discuss the parameter regions of large active-sterile neutrino mixing angles where sterile neutrinos produced in non-resonant flavour oscillations can approach thermalization in several cosmologies. We show that thermalization affects only large active-sterile neutrino mixing already rejected by different limits. Hence, the allowed sterile neutrino parameter regions are unaffected.

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Graciela B. Gelmini, Philip Lu, Volodymyr Takhistov. 2020-06-16. Note on Thermalization of Non-resonantly Produced Sterile Neutrinos. https://doi.org/10.1088/1475-7516/2020/10/a01

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