Effect of Finite Nucleon Mass on Primordial Nucleosynthesis

الأصل · EN

We have modified the standard code for primordial nucleosynthesis to include the effect of finite nucleon mass on the weak-interaction rates as calculated by Seckel seckel. We find a small, systematic increase in the ⁴He yield, ΔY ≃ 0.0057Y, which is insensitive to the value of the baryon-to-photon ratio η and slightly larger than Seckel's estimate. The fractional changes in the abundances of D, ³He, and ⁷Li range from 0.08% to 3% for 10⁻¹¹≤ η≤ 10⁻⁸.