The Large Underground Xenon (LUX) dark matter search was a 250-kg active mass dual-phase time projection chamber that operated by detecting light and ionization signals from particles incident on a xenon target. In December 2015, LUX reported a minimum 90% upper C.L. of $6\times {10}^{-46}{\mathrm{cm}}^2$ on the spin-independent WIMP-nucleon elastic scattering cross section based on a $1.4\times {10}^4\mathrm{kg}·\mathrm{day}$ exposure in its first science run. Tension between experiments and the absence of a definitive positive detection suggest it would be prudent to search for WIMPs outside the standard spin-independent/spin-dependent paradigm. Recent theoretical work has identified a complete basis of 14 independent effective field theory (EFT) operators to describe WIMP-nucleon interactions. In addition to spin-independent and spin-dependent nuclear responses, these operators can produce novel responses such as angular-momentum-dependent and spin-orbit couplings. Here we report on a search for all 14 of these EFT couplings with data from LUX’s first science run. Limits are placed on each coupling as a function of WIMP mass.

中文翻译：

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第一次LUX暗物质搜索的有效场论分析

大型地下氙气 (LUX) 暗物质搜索是一个 250 千克活性质量双相时间投影室，它通过检测入射在氙气靶上的粒子的光和电离信号进行操作。2015 年 12 月，LUX 报告了至少 90% 的上限值$6\times {10}^{-46}{\mathrm{厘米}}^2$ 在基于自旋的 WIMP-核子弹性散射截面上 $1.4\times {10}^4\mathrm{公斤}·日$在第一次科学运行中曝光。实验之间的紧张和没有明确的阳性检测表明在标准的自旋独立/自旋依赖范式之外搜索 WIMP 是谨慎的。最近的理论工作已经确定了 14 个独立的有效场理论 (EFT) 算子的完整基础来描述 WIMP-核子相互作用。除了与自旋无关和与自旋相关的核响应之外，这些算子还可以产生新的响应，例如角动量相关和自旋轨道耦合。在这里，我们报告了对所有 14 个这些 EFT 耦合的搜索，以及来自 LUX 首次科学运行的数据。作为 WIMP 质量的函数，对每个耦合施加了限制。