Cosmological scenario of stop NLSP with gravitino LSP and the cosmic lithium problem

Abstract

The discrepancy on Li^7 and Li^6 abundances between the observational data and the standard Big Bang Nucleosynthesis theory prediction has been a nagging problem in astrophysics and cosmology, given the highly attractive and succesful Big Bang paradigm. One possible solution of this lithium problem is through hadronic decays of a massive metastable particle which alter the primordial element abundances. We explore this possibility using gravitino dark matter framework in which the next lightest supersymmetric particle (NLSP) is typically long-lived. We found that stop NLSP can provide an attractive solution to the lithium problem.

12 pages, 3 figures

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Cited by in corpus (21)

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• Nucleosynthesis Constraints on a Massive Gravitino in Neutralino Dark Matter Scenarios
• Cosmic Rays from Dark Matter Annihilation and Big-Bang Nucleosynthesis
• Top-philic dark matter within and beyond the WIMP paradigm
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• The solar, exoplanet and cosmological lithium problems
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