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Hadronic Decay of Late-Decaying Particles and Big-Bang Nucleosynthesis

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arxiv astro-ph/0402490 v3 pith:EYETMANS submitted 2004-02-20 astro-ph hep-ph

Masahiro Kawasaki , Kazunori Kohri , Takeo Moroi This is my paper · ORCID
classification astro-phhep-ph
keywords particleshadroniclate-decayingabundancebig-bangdecaynucleosynthesisprimordial
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We study the big-bang nucleosynthesis (BBN) scenario with late-decaying exotic particles with lifetime longer than $\sim 1$ sec. With a late-decaying particle in the early universe, predictions of the standard BBN scenario can be significantly altered. Therefore, we derive constraints on its primordial abundance. We pay particular attention to hadronic decay modes of such particles. We see that the non-thermal production process of D, ${\rm ^{3}He}$ and ${\rm ^6Li}$ provides a stringent upper bound on the primordial abundance oflate-decaying particles with hadronic branching ratio.

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Cited by 6 Pith papers

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