Big-bang nucleosynthesis with sub-GeV massive decaying particles
High Energy Physics - Phenomenology
2021-01-06 v1 Cosmology and Nongalactic Astrophysics
Abstract
We consider the effects of the injections of energetic photon and electron (or positron) on the big-bang nucleosynthesis. We study the photodissociation of light elements in the early Universe paying particular attention to the case that the injection energy is sub-GeV and derive upper bounds on the primordial abundances of the massive decaying particle as a function of its lifetime. We also discuss a solution of the Li problem in this framework.
Keywords
Cite
@article{arxiv.2006.14803,
title = {Big-bang nucleosynthesis with sub-GeV massive decaying particles},
author = {Masahiro Kawasaki and Kazunori Kohri and Takeo Moroi and Kai Murai and Hitoshi Murayama},
journal= {arXiv preprint arXiv:2006.14803},
year = {2021}
}
Comments
28 pages, 11 figures