Active-sterile neutrino transformation solution forr-process nucleosynthesis

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1 May 1999

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 59 (5) , 2873-2887
https://doi.org/10.1103/physrevc.59.2873

Abstract

We discuss how matter-enhanced active-sterile neutrino transformation in the

ν_{e} ⇌ ν_{s}

and

{\bar{ν}}_{e} ⇌ {\bar{ν}}_{s}

channels could enable the production of the rapid neutron capture

(r

-process) nuclei in neutrino-heated supernova ejecta. In this scheme the lightest sterile neutrino would be heavier than the

ν_{e}

and split from it by a vacuum mass-squared difference of

3 {eV}^{2} ≲ δ m_{es}^{2} ≲ 70 {eV}^{2}

with vacuum mixing angle

\sin^{2} 2 θ_{es} > 10^{- 4} .

Keywords

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