New Supernova Constraints on Sterile Neutrino Production

Details New Supernova Constraints on Sterile Neutrino Production New Supernova Constraints on Sterile Neutrino Production

1996-05-18

arxiv.org/abs/hep-ph/9605350v1

Phys.Rev.Lett. 77 (1996) 3066-3069

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages; Latex

Scientific paper

10.1103/PhysRevLett.77.3066

We consider the possibility that a light sterile-neutrino species $\nu_S$ can be produced by $\nu_e$ scattering during the cooling of a proto-neutron star. If we parameterize the sterile neutrino production cross-section by a parameter $A$ as $\sigma (\nu_e X\rightarrow \nu_S X) = A \sigma(\nu_e X\rightarrow \nu_e X)$, where $X$ is an electron, neutron or proton, we show that $A$ is constrained by limits to the conversion of $\nu_e$ to $\nu_S$ in the region between the sterile-neutrino trapping region and the electron-neutrino trapping region. This consideration excludes values of $A$ in the range between $10^{-4} \la A \la 10^{-1}$.

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