对 Halo-EFT 辐射俘获的精细结构常数依赖性的研究。

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2024-10-07 DOI:10.1140/epja/s10050-024-01408-1

Ulf-G. Meißner, Bernard Ch. Metsch, Helen Meyer

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引用次数: 0

摘要

我们在所谓的 "晕效应场理论"（Halo Effective Field Theory）框架内研究了一些选定的辐射俘获反应速率的精细结构常数依赖性，以评估库仑穿透性的一些假设是否充分。我们发现，这种依赖性偏离了通过简单的穿透系数对这种效应的截面进行参数化所隐含的依赖性。我们讨论了这种精细结构依赖性的一些特征，特别是它对原始核合成中轻元素丰度的潜在影响。

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A study of the fine-structure constant dependence of radiative capture in Halo-EFT

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.

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来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.