Relic neutrinos: Antineutrinos of Primordial Nucleosynthesis

Abstract

For the first time the antineutrino spectrum formed as a result of neutron and tritium decays during the epoch of primordial nucleosynthesis is calculated. This spectrum is a non-thermal increase in addition to the standard cosmic neutrino background (C$\nu$B) whose thermal spectrum was formed before the beginning of primordial nucleosynthesis. For energy larger than $10^{-2}$eV the calculated non-thermal antineutrino flux exceeds the C$\nu$B spectrum and there are no other comparable sources of antineutrino in this range. The observations of these antineutrinos will allow us to look directly at the very early Universe and non-equilibrium processes taken place before, during, and some time after primordial nucleosynthesis.

arXiv commentAccepted for publication as a Rapid Communication in Physical Review D. 5 pages, 2 figures

References in corpus (17)

• Planck 2015 results. XIII. Cosmological parameters
• Big-Bang Nucleosynthesis
• Big Bang Nucleosynthesis: 2015
• Relic neutrino decoupling including flavour oscillations
• Neutrinos in cosmology
• PArthENoPE: Public Algorithm Evaluating the Nucleosynthesis of Primordial Elements
• The Diffuse Supernova Neutrino Background
• Neutrino decoupling in the early Universe
• Upper Bound of 0.28 eV on the Neutrino Masses from the Largest Photometric Redshift Survey
• AlterBBN: A program for calculating the BBN abundances of the elements in alternative cosmologies
• High-Energy Neutrino Astrophysics: Status and Perspectives
• Prospects for the direct detection of the cosmic neutrino background
• Relic Antineutrino Capture on 163-Ho decaying Nuclei
• Low Energy Antineutrino Detection Using Neutrino Capture on EC Decaying Nuclei
• Time of primordial Be-7 conversion into Li-7, energy release and doublet of narrow cosmological neutrino lines
• Detection Prospects of the Cosmic Neutrino Background
• Proposal for Resonant Detection of Relic Massive Neutrinos

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• The influence of the effective number of active and sterile neutrinos on the determination of the values of cosmological parameters
• Spectral features of non-equilibrium antineutrinos of primordial nucleosynthesis