Dark matter inverse problem: Extracting particle physics from scattering events
Dark matter inverse problem: Extracting particle physics from scattering events
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暗物质反问题：从散射事件中提取粒子物理
DOI：
10.1103/physrevd.85.123507
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发表时间：
2011
影响因子：
5
通讯作者：
K. Zurek
中科院分区：
文献类型：
--
作者：
Samuel D. McDermott;Hai;K. Zurek
暗物质直接探测中主要可观察到的是散射事件的光谱。我们模拟多个正直接检测信号（在锗、氙和氩目标上），以探索可以在多大程度上提取底层粒子物理学（表现为介导散射的算子的动量依赖性）。考虑到实现（泊松）噪声，具有 300 个事件的单个目标核对于从 10 GeV 到 1 TeV 的各种暗物质质量区分动量依赖关系相差 q^\pm2 的算子的能力有限。随着包含多个目标（或单个目标上多个事件的因素），具有不同动量依赖性的算子的辨别力在 95% C.L. 时变得非常强。质量为 50 GeV 及以上的候选暗物质。另一方面，在多次实验每次收集 1000 个或更多事件之前，10 GeV 候选者的操作者辨别力仍然很差。
The primary observable in dark matter direct detection is the spectrum of scattering events. We simulate multiple positive direct detection signals (on germanium, xenon, and argon targets) to explore the extent to which the underlying particle physics, manifested in the momentum dependence of the operator mediating the scattering, can be extracted. Taking into account realization (Poisson) noise, a single target nucleus with 300 events has limited power to discriminate operators with momentum dependence differing by q^\pm2 for a wide range of dark matter masses from 10 GeV to 1 TeV. With the inclusion of multiple targets (or a factor of several more events on a single target), the discrimination of operators with different momentum dependence becomes very strong at the 95% C.L. for dark matter candidates of mass 50 GeV and above. On the other hand, operator discrimination remains poor for 10 GeV candidates until multiple experiments each collect 1000 or more events.