Regular Article - Theoretical Physics
Probing nuclear observables via primordial nucleosynthesis
Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Rheinische Friedrich-Wilhelms Universität Bonn, 53115, Bonn, Germany
2 Institute for Advanced Simulation (IAS-4), Institut für Kernphysik (IKP-3), Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, Germany
3 Tbilisi State University, 0186, Tbilisi, Georgia
4 Institute for Advanced Simulation (IAS-4), Forschungszentrum Jülich, 52425, Jülich, Germany
5 Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms Universität Bonn, 53115, Bonn, Germany
Accepted: 26 October 2022
Published online: 8 November 2022
We study the dependence of primordial nuclear abundances on fundamental nuclear observables such as binding energies, scattering lengths, neutron lifetime, etc. by varying these quantities. The numerical computations were performed with four publicly available codes, thus facilitating an investigation of the model-dependent (systematic) uncertainties on these dependences. Indeed deviations of the order of a few percent are found. Moreover, accounting for the temperature dependence of the sensitivity of the rates to some relevant parameters leads to a reduction of the sensitivity of the final primordial abundances, which in some cases is appreciable. These effects are considered to be relevant for studies of the dependence of the nuclear abundances on fundamental parameters such as quark masses or couplings underlying the nuclear parameters studied here.
© The Author(s) 2022
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