testing primordial abundances with sterile neutrinos

O.CIVITARESE; M.E.MOSQUERA

physical review c

Año: 2008 vol. 77 p. 458061 - 458066

The mixing between sterile and active neutrinos is taken intoaccount in the calculation of Big Bang Nucleosynthesis. Theabundances of primordial elements, like D, 3He, 4He, and 7Li, arecalculated by including sterile neutrinos and by using finitechemical potentials. It is found that the resulting theoreticalabundances are consistent with Wilkinson Microwave AnisotropyProbe (WMAP) data on baryonic densities, and with limits of LiquidScintillator Neutrino Detector (LSND) on mixing angles, only if7Li is excluded from the statistical analysis of theoretical andexperimental results.