Nuclear physics experiments give reaction rates that, via modelling and comparison with primordial abundances, constrain cosmological parameters. The error bars of a key reaction, D(p,γ)3He, were tightened in 2020, revealing discrepancies between different analyses and calling for more accurate measurements of other reactions.

中文翻译：

---

解决有关早期宇宙的结论需要准确的核测量

核物理实验给出的反应速率通过建模和与原始丰度的比较来约束宇宙学参数。关键反应D（p，γ）3He的误差线在2020年收紧，揭示了不同分析之间的差异，并呼吁对其他反应进行更准确的测量。