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arXiv · 0811.1119

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

Kazunori Kohri·Yudi Santoso
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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.

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BibTeXRIS

Kazunori Kohri, Yudi Santoso. 2008-11-07. Cosmological scenario of stop NLSP with gravitino LSP and the cosmic lithium problem. https://doi.org/10.1103/physrevd.79.043514

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