Z boson emission by a neutrino in de Sitter expanding universe
High Energy Physics - Theory
2023-11-27 v3
Abstract
Production of Z bosons in emission processes by neutrinos in the expanding de Sitter universe is studied by using perturbative methods. The total probability and transition rate for the spontaneous emission of a Z boson by a neutrino is computed analytically, then we perform a graphical analysis in terms of the expansion parameter. Our results prove that this process is possible only for large expansion conditions of the early Universe. Finally the density number of Z bosons is defined and we obtain a quantitative estimation of this quantity in terms of the density number of neutrinos.
Keywords
Cite
@article{arxiv.2008.09816,
title = {Z boson emission by a neutrino in de Sitter expanding universe},
author = {Mihaela-Andreea Baloi and Cosmin Crucean and Diana Dumitrele},
journal= {arXiv preprint arXiv:2008.09816},
year = {2023}
}
Comments
18 pages, 4 figures