Dark matter, light mediators, and the neutrino floor
Dark matter, light mediators, and the neutrino floor
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暗物质、光介体和中微子底板
DOI：
10.1103/physrevd.95.051701
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发表时间：
2016
影响因子：
5
通讯作者：
L. Strigari
中科院分区：
文献类型：
--
作者：
J. Dent;B. Dutta;J. Newstead;L. Strigari
我们使用有效场论 (EFT) 算子和光、$\lesssim 100$ MeV 质量介体来分析未来的直接数据物质检测实验。我们将这些算子的核反冲能谱与预测的高能太阳中微子能谱进行比较。确定了一组产生与中微子背景相似的光谱的算子，但是这组算子与模拟重质中微子背景的算子不同，$\gtrsim 100$ MeV 质量介体。我们概述了基于暗物质-核相互作用的动量依赖性的一般分类方案，以确定在中微子背景存在的情况下给定算子的发现极限有多强饱和。我们的结果强调了考虑暗物质一般理论框架的好处，并激励实验不断取得进展，以降低核反冲能量阈值。
We analyze future direct data matter detection experiments using Effective Field Theory (EFT) operators with light, $\lesssim 100$ MeV mass mediators. We compare the nuclear recoil energy spectra from these operators to the predicted high energy solar neutrino spectrum. A set of operators that generate spectra similar to the neutrino background is identified, however this set is distinct from those that mimic the neutrino background for heavy, $\gtrsim 100$ MeV mass mediators. We outline a general classification scheme based on momentum dependence of the dark matter-nucleus interaction to determine how strong the discovery limit for a given operator saturates in the presence of the neutrino background. Our results highlight the benefit of considering a general theoretical framework regarding dark matter, and motivate continued experimental progress towards lower nuclear recoil energy thresholds.