Probing nuclear observables via primordial nucleosynthesis

Abstract

We study the dependence of primordial nuclear abundances on fundamental nuclear observables such as binding energies, scattering lengths, neutron lifetime, \textit{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.

13 pages, 6 figures

References in corpus (6)

• Primordial Nucleosynthesis: from precision cosmology to fundamental physics
• Primordial nucleosynthesis as a probe of fundamental physics parameters
• Quark mass variation constraints from Big Bang nucleosynthesis
• Anthropic considerations in nuclear physics
• $\theta$-dependence of light nuclei and nucleosynthesis
• Alpha-alpha scattering in the Multiverse