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arXiv · 1801.02389

Non-Thermal Cosmic Rays During Big Bang Nucleosynthesis to Solve the Lithium Problem

Ming-Ming Kang·Yang Hu·Hong-Bo Hu·Shou-Hua Zhu
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Abstract

The discrepancy between the theoretical prediction of primordial lithium abundances and astronomical observations is called the Lithium Problem. We find that extra contributions from non-thermal hydrogen and helium during Big Bang nucleosynthesis can explain the discrepancy, for both Li-7 and Li-6, and will change the deuterium abundance only little. The allowed parameter space of such an amount of non-thermal particles and the energy range is shown. The hypothesis is stable regardless of the cross-section uncertainty of relevant reactions and the explicit shape of the energy spectrum.

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Ming-Ming Kang, Yang Hu, Hong-Bo Hu, Shou-Hua Zhu. 2018-01-08. Non-Thermal Cosmic Rays During Big Bang Nucleosynthesis to Solve the Lithium Problem. https://doi.org/10.3847/1538-4357%2Fab0178

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