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

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

2008-11-07

arxiv.org/abs/0811.1119v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures

Scientific paper

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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