Nuclear reaction network for primordial nucleosynthesis: a detailed analysis of rates, uncertainties and light nuclei yields

By P. Serpico, S. Esposito, F. Iocco, G. Mangano, G. Miele, O. Pisanti. 2004

217 citations recorded by the source corpus.

We analyse in detail the standard primordial nucleosynthesis scenario. In particular, we discuss the key theoretical issues which are involved in a detailed prediction of light nuclide abundances, such as the weak reaction rates, neutrino decoupling and nuclear rate modelling. We also perform a new analysis of available data on the main nuclear processes entering the nucleosynthesis reaction network, with particular stress on their uncertainties as well as on their role in determining the corresponding uncertainties on light nuclide theoretical estimates. The current status of theoretical versus experimental results for 2H, 3He, 4He and 7Li is then discussed using the determination of the baryon density as obtained from cosmic microwave background anisotropies.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/07966fa8497c0a9ead0aa5b762cc683af0eb6966

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In Nuclear and High Energy Physics

1. Miguel Escudero Abenza
2. E. Skillman
3. K. Olive
4. A. Coc
5. K. Langanke
6. E. Vangioni
7. E. Aver
8. P. Serpico

Citations in the corpus

• Precision early universe thermodynamics made simple: Neff and neutrino decoupling in the Standard Model and beyond (2020, background): “The effect of neutrinos in primordial nucleosynthesis is threefold [89, 90]: i) neutrinos participate in proton-to-neutron reactions and hence the neutrino number density enters the proton-to-neutron conversion rates, ii) neutrinos affect the expansion rate of the Universe, and iii) residual electro”
• A new approach to systematic uncertainties and self-consistency in helium abundance determinations (2010, background): “…a zero-parameter theory (Cyburt et al. 2002, 2003), leading to relatively precise predictions of the light element abundances of D, 3He, 4He, and 7Li (Cyburt et al. 2001; Coc et al. 2002, 2004; Cyburt 2004; Descouvemont et al. 2004; Cuoco et al. 2004; Serpico et al. 2004; Cyburt et al. 2008).”
• Solar fusion cross sections II: the pp chain and CNO cycles (2010, background): “…exchangecurrent contributions is 0.219 eV b, in excellent agreement with the value extrapolated from the LUNA measurements (0.216± 0.010 eV b), and evaluations by Cyburt (2004) (0.227 ± 0.014 eV b), Descouvemont et al. (2004) (0.223± 0.007 eV b) and Serpico et al. (2004) (0.214± 0.007 eV b).”
• A robust upper limit on Neff from BBN, circa 2011 (2011, methodology): “Concerning the BBN predictions, we used nuclide yields based on the code described in [17], also including the uncertainties due to nuclear reactions extensively described in [18].”
• STANDARD BIG BANG NUCLEOSYNTHESIS UP TO CNO WITH AN IMPROVED EXTENDED NUCLEAR NETWORK (2011, background): “Sensitivity studies have already been performed for the 12 main standard BBN reactions (Nollett & Burles 2000; Serpico et al. 2004; Cyburt & Davids 2008; Coc & Vangioni 2010) and the many others involved in 4He, D, 3He, and 7Li production (A color version of this figure is available in the online…”