Big Bang Nucleosynthesis and Lepton Number Asymmetry in the
نویسنده
چکیده
Recently it has been reported that there may be a discrepancy between big bang nucleosynthesis theory and observations (BBN crisis). We show that BBN predictions agree with the primordial abundances of light elements, 3 He and 7 Li inferred from the observational data if the electron neutrino has a net chemical potential ξ νe due to lepton asymmetry. We estimate that ξ νe = 0.043 Subject headings: abundances — early universe — elementary particles — nucleosynthesis – 2 –
منابع مشابه
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