Primordial Deuterium after LUNA: concordances and error budget

The accurate evaluation of the nuclear reaction rates and corresponding uncertainties is an essential requisite for a precise determination light nuclide primordial abundances. recent measurement D(p,gamma)3He radiative capture cross section by LUNA collaboration, with its order 3% error, represents important step in improving theoretical prediction Deuterium produced early universe. In view this result, we present paper full analysis abundance, which includes new critical study impact other two main processes burning, namely deuteron-deuteron transfer reactions, D(d,p)3H D(d,n)3He. particular, emphasis given to statistical method experimental data, quantitative uncertainties, comparison similar studies presented literature. We then discuss our on concordance nucleosynthesis stage Planck experiment results baryon density Omegab h2 effective number neutrino parameter Neff, as function assumed value 4He mass fraction Yp. While after results, quite precisely fixed, points excellent agreement combined also including Helium leads possible scenarios different predictions Neff. argue that systematics Yp would be great importance assessing overall standard cosmological model.