Enhancement of the sterile neutrinos yield at high matter density and at increasing the medium neutronization

TL;DR

This paper investigates how high matter density and neutronization levels influence the production of sterile neutrinos, revealing conditions that significantly enhance their yield in astrophysical environments.

Contribution

It provides new calculations of sterile neutrino yields in superdense matter with varying neutronization, highlighting conditions that maximize their production.

Findings

Sterile neutrino yield increases with matter density and neutronization.

Maximum sterile neutrino production occurs near neutronization degree of two.

Results applicable to modeling neutrino fluxes in supernova cores.

Abstract

The relative yields of active and sterile neutrinos in the matter with a high density and different degree of neutronization are calculated. A significant increase in the proportion of sterile neutrinos produced in superdense matter when degree of neutronization approaches the value of two is found. The results obtained can be used in the calculations of the neutrino fluxes for media with a high density and different neutronization degrees in astrophysical processes such as the formation of protoneutron core of a supernova.