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Updated: Aug 17, 2026

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
Published on: December 14, 2017
Low reheating temperature and the visible sterile neutrino
Graciela Gelmini1, Sergio Palomares-Ruiz, Silvia Pascoli
1Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA. gelmini@physics.ucla.edu
Abstract:
We present here a scenario, based on a low reheating temperature T(R)<<100 MeV at the end of (the last episode of) inflation, in which the coupling of sterile neutrinos to active neutrinos can be as large as experimental bounds permit (thus making this neutrino "visible" in future experiments). In previous models this coupling was forced to be very small to prevent a cosmological overabundance of sterile neutrinos. Here the abundance depends on how low the reheating temperature is. For example, the sterile neutrino required by the Liquid Scintillator Neutrino Detector result may not have any cosmological problem within our scenario.
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