https://doi.org/10.1140/epja/s10050-024-01408-1
Regular Article - Theoretical Physics
A study of the fine-structure constant dependence of radiative capture in Halo-EFT
1
Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms Universität Bonn, 53115, Bonn, Germany
2
Bethe Center for Theoretical Physics, Rheinische Friedrich-Wilhelms Universität Bonn, 53115, Bonn, Germany
3
Institute for Advanced Simulation (IAS-4), Forschungszentrum Jülich, 52425, Jülich, Germany
Received:
22
May
2024
Accepted:
26
August
2024
Published online:
7
October
2024
We study the fine structure constant dependence of the rates of some selected radiative capture reactions within the framework of so-called Halo Effective Field Theory in order to assess the adequacy of some assumptions made on the Coulomb penetrability. We find that this dependence deviates from that implied by a parameterization of the cross sections of this effect via a simple penetration factor. Some features of this fine-structure dependence are discussed, in particular its potential impact on the abundances of the light elements in primordial nucleosynthesis.
© The Author(s) 2024
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