Signature of Long-lived Relic Particles on Primordial Light Element Abundances in Big Bang Nucleosynthesis

Details Signature of Long-lived Relic Particles on Primordial Light Element Abundances in Big Bang Nucleosynthesis Signature of Long-lived Relic Particles on Primordial Light Element Abundances in Big Bang Nucleosynthesis

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1269...63k&link_type=abstract

THE 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: OMEG-2010. AIP Conference Proceedings, Volume 1

Mathematics

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Element Relative Abundance, Nucleosynthesis, Galaxies, Spectroscopy, Dark Matter, Origin, Formation, And Abundances Of The Elements, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Galactic Halo, Spectroscopy And Spectrophotometry, Dark Matter

Scientific paper

The standard Big Bang nucleosynthesis model predicts primordial light element abundances which are rather consistent with those derived from astronomical observations. However, observed abundances of 7Li in metal-poor halo stars are a factor of ~ three smaller and those of 6Li in some of the stars are a factor of ~ 1000 larger than respective predictions for the cosmological baryon density determined with WMAP data. We summarize latest results of three cosmological scenarios beyond the standard model of particle physics in which light element abundances are affected, i.e., 1. the radiative decay of long-lived particles, 2. the existence of long-lived negatively charged massive particles, and 3. the existence of long-lived strongly interacting massive particles.

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