Refining Big Bang Nucleosynthesis abundances via the Trojan Horse method

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2025-04-10 DOI:10.1140/epja/s10050-025-01546-0

Roberta Spartà, Rosario Gianluca Pizzone, Livio Lamia, Alessandro Alberto Oliva, Marco La Cognata, Alessia Di Pietro, Pierpaolo Figuera, Giovanni Luca Guardo, Marco La Commara, Dario Lattuada, Marco Mazzocco, Sara Palmerini, Giuseppe Gabriele Rapisarda, Stefano Romano, Maria Letizia Sergi, Aurora Tumino

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Abstract

This work presents the Trojan Horse Method (THM) as a powerful technique for measuring nuclear reaction cross sections at astrophysical energies. We then explore the impact of THM-derived reaction rates on the predictions of Standard Big Bang Nucleosynthesis (SBBN) using the PRIMAT code. Primordial abundances are shown for the single rate impact and, for the first time, also for all the THM rates together. The result shows significant differences with the use of THM rates, which in some cases goes in the direction of improving the agreement with the observations with respect to the use of only reaction rates from direct data, especially for the \(^7\hbox {Li}\) and deuterium abundances, which are still open issues for SBBN.

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通过特洛伊木马方法提炼大爆炸核合成丰度

这项工作提出了特洛伊木马方法（THM）作为一个强大的技术测量核反应截面在天体物理能量。然后，我们探讨了thm衍生的反应速率对使用PRIMAT代码预测标准大爆炸核合成（SBBN）的影响。原始丰度显示了单一速率的影响，并首次显示了所有THM速率的影响。结果显示出与使用THM速率的显著差异，这在某些情况下朝着改善与仅使用直接数据的反应速率的观察结果的一致性的方向，特别是对于\(^7\hbox {Li}\)和氘丰度，这仍然是SBBN的开放问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.