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Physical Review D 86 (2012) 063501
Neutron injection during primordial nucleosynthesis alleviates the primordial 7Li problem
D. Albornoz Vasquez1, A. Belikov1, A. Coc2, J. Silk1, E. Vangioni1

We present a parametrized study of the effects of free thermal neutron injection on primordial nucleosynthesis, where both the rate and the time scale of injection are varied. This generic approach is found to yield a successful solution for reducing the 7Li abundance without causing significant problems to other elemental abundances. Our analysis demonstrates that hadronic injection, possibly due to decays or annihilations of dark matter particles with a mass of about 1 to 30 GeV, provides a possible solution to an outstanding problem in the standard Big Bang model.
1 :  IAP - Institut d'Astrophysique de Paris
2 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
Astrophysics - Cosmology and Extragalactic Astrophysics – Nuclear Theory
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