Revisiting ${}^7$Be Weak and Radiative Transition Rates in Big Bang Nucleosynthesis: Implications for the Primordial Lithium Problem

Simone Taioli, Francesca Triggiani, Stefano Simonucci

The primordial 7Li abundance predicted by standard Big Bang nucleosynthesis (BBN) exceeds observations in old, metal-poor stars by a factor of 3-4. Since most primordial 7Li is pro…