Effect of Finite Nucleon Mass on Primordial Nucleosynthesis

1993/07/15 by Geza Gyuk, Michael S. Turner · 2 citations
Physics and Astronomy · #astro-ph #hep-ph

paper · pdf

published as Phys.Rev. 56 (1997) D3191 · 10 pages, 2 Figs available on request, FERMILAB-Pub-93/181-A

arxiv created 1993/07/15 · arxiv updated 2009/11/30

Abstract

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 \citeseckel. We find a small, systematic increase in the ⁴He yield, ΔY ≃ 0.0057 Y, 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.

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