A study of the fine-structure constant dependence of radiative capture in Halo-EFT.
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| Title: | A study of the fine-structure constant dependence of radiative capture in Halo-EFT. |
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| Authors: | Meißner, Ulf-G.1,2,3 (AUTHOR), Metsch, Bernard Ch.1,3 (AUTHOR) b.metsch@fz-juelich.de, Meyer, Helen1,2 (AUTHOR) |
| Source: | European Physical Journal A -- Hadrons & Nuclei. Oct2024, Vol. 60 Issue 10, p1-18. 18p. |
| Subjects: | Fine-structure constant, Light elements, Parameterization, Nucleosynthesis |
| Abstract: | 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346001 |
| DOI: | 10.1140/epja/s10050-024-01408-1 |
