The surprising influence of late charged current weak interactions on Big Bang Nucleosynthesis

E. Grohs, G. M. Fuller

The weak interaction charged current processes (${\nu }_e+n\leftrightarrow p+e^{-}$, ${\bar{\nu }}_e+p\leftrightarrow n+e^{+}$, $n\leftrightarrow p+e^{-}+{\bar{\nu }}_e$) interconvert neutrons and protons…