Primordial synthesis of light nuclei (D, ³He, ⁴He, ⁷Li) in the first ~20 min. Observed abundances constrain baryon density and number of light neutrino species.
Primordial synthesis of light nuclei (D, ³He, ⁴He, ⁷Li) in the first ~20 min. Observed abundances constrain baryon density and number of light neutrino species.