宇宙生成论作为寻找稀有物理过程的背景
Cosmogenic Production as a Background in Searching for Rare Physics Processes
摘要：
我们重新计算了几种长寿命同位素的宇宙起源产生率，这些同位素是寻找稀有物理过程（如探测暗物质和无中微子双β衰变）的潜在背景来源。利用更新的宇宙射线中子通量测量，我们使用TMENS 1.0来研究几种探测器靶的稳定同位素的宇宙成因活化，发现靶材料和低温恒温器内部产生的宇宙成因同位素可以导致暗物质搜索和无中微子双β衰变的大背景。我们使用先前发表的低背景HPGe数据来约束表面上的$^{3}H$的产生，并且上限与我们的计算一致。我们注意到，在不同的目标中，几种同位素的宇宙起源产生可以为暗物质探测和用大质量探测器进行无中微子双β衰变产生潜在的背景，因此应该非常小心地限制和/或处理目标的宇宙起源活化。
英文摘要：
We revisit calculations of the cosmogenic production rates for several long-lived isotopes that are potential sources of background in searching for rare physics processes such as the detection of dark matter and neutrinoless double-beta decay. Using updated cosmic-ray neutron flux measurements, we use TALYS 1.0 to investigate the cosmogenic activation of stable isotopes of several detector targets and find that the cosmogenic isotopes produced inside the target materials and cryostat can result in large backgrounds for dark matter searches and neutrinoless double-beta decay. We use previously published low-background HPGe data to constrain the production of $^{3}H$ on the surface and the upper limit is consistent with our calculation. We note that cosmogenic production of several isotopes in various targets can generate potential backgrounds for dark matter detection and neutrinoless double-beta decay with a massive detector, thus great care should be taken to limit and/or deal with the cosmogenic activation of the targets.
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