Fe碎片对LiBeB分析的重要性：解释AMS-02数据是否需要Li的主要来源？
The importance of Fe fragmentation for LiBeB analyses: Is a Li primary source needed to explain AMS-02 data?
摘要：
AMS-02对Li、Be和B的高精度数据提供了对银河宇宙线输运参数的最佳约束。我们重新评估的影响，Fe碎片的Li，Be和B建模。我们讨论的后果，运输参数的确定和重新评估是否需要一个主要来源的锂匹配AMS-02数据。我们重新规范了几个截面参数化现有的数据，最重要的反应产生锂，Be和B。我们使用USINE代码与这些新的横截面集重新分析Li/C，Be/C和B/C AMS-02数据。我们建立了三个同样合理的横截面集。与初始横截面组相比，它们导致Li（$\sim20-50\%$）和Be（$\sim5-15\%$）的平均增加的生产，同时使B通量基本不变。特别是，Fe碎片被发现有助于高达10%的Li和Be通量。用于AMS-02 Li/C、Be/C和B/C数据的联合分析，拟合得到显著改善，扩散系数（$\sim 20\%)$ .三个更新的横截面集被发现稍微低于或超过的Li/C和B/C的比率：这强烈不利于在宇宙射线的主要来源的Li的证据。我们强调，即将由AMS-02发布的Li（以及较小程度上的Be）的同位素宇宙射线比也会受到这些更新集的使用的影响。几乎没有关于从Ne、Mg、Si和Fe产生Li和B同位素的核数据，而这些反应估计占总产量的$\sim 20\%$。新的核测量将受到赞赏，并有助于更好地利用AMS-02高精度宇宙射线数据。
英文摘要：
High-precision data from AMS-02 on Li, Be, and B provide the best constraints on Galactic cosmic-ray transport parameters. We re-evaluate the impact of Fe fragmentation on the Li, Be, and B modelling. We discuss the consequences on the transport parameter determination and reassess whether a primary source of Li is needed to match AMS-02 data. We renormalised several cross-section parametrisations to existing data for the most important reactions producing Li, Be, and B. We used the USINE code with these new cross-section sets to re-analyse Li/C, Be/C, and B/C AMS-02 data. We built three equally plausible cross-section sets. Compared to the initial cross-section sets, they lead to an average enhanced production of Li ($\sim20-50\%$) and Be ($\sim5-15\%$), while leaving the B flux mostly unchanged. In particular, Fe fragmentation is found to contribute to up to 10\% of the Li and Be fluxes. Used in the combined analysis of AMS-02 Li/C, Be/C, and B/C data, the fit is significantly improved, with an enhanced diffusion coefficient ($\sim 20\%)$. The three updated cross-section sets are found to either slightly undershoot or overshoot the Li/C and B/C ratios: this strongly disfavours evidence for a primary source of Li in cosmic rays. We stress that isotopic cosmic-ray ratios of Li (and to a lesser extent Be), soon to be released by AMS-02, are also impacted by the use of these updated sets. Almost no nuclear data exist for the production of Li and B isotopes from Ne, Mg, Si, and Fe, whereas these reactions are estimated to account for $\sim 20\%$ of the total production. New nuclear measurements would be appreciated and help to better exploit the high-precision AMS-02 cosmic-ray data.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
