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arXiv · 2006.14803

Big-bang nucleosynthesis with sub-GeV massive decaying particles

Masahiro Kawasaki·Kazunori Kohri·Takeo Moroi·Kai Murai·Hitoshi Murayama
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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 $^7$Li problem in this framework.

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Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi, Kai Murai, Hitoshi Murayama. 2020-06-26. Big-bang nucleosynthesis with sub-GeV massive decaying particles. https://doi.org/10.1088/1475-7516%2F2020%2F12%2F048

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