A Simultaneous Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems from a Long-Lived Negatively-Charged Leptonic Particle

Motohiko Kusakabe, Toshitaka Kajino, Richard N. Boyd +2

The ${}^6$Li abundance observed in metal poor halo stars exhibits a plateau similar to that for ${}^7$Li suggesting a primordial origin. However, the observed abundance of ${}^6$Li is a…