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Search for Millicharged Particles Using Optically Levitated Microspheres

zqyin 添加于 2014-8-21 17:11 | 1306 次阅读 | 0 个评论

作者
Moore DC, Rider AD, Gratta G
摘要
We report results from a search for stable particles with charge > $10^{-5}$ e in bulk matter using levitated dielectric microspheres in high vacuum. No evidence for such particles was found in a total sample of 1.4 ng, providing an upper limit on the abundance per nucleon of 2.5 x $10^{-14}$ at the 95% confidence level for the material tested. These results provide the first direct search for single particles with charge < 0.1 e bound in macroscopic quantities of matter and demonstrate the ability to perform sensitive force measurements using optically levitated microspheres in vacuum.
详细资料
- 关键词: hep-ex; cond-mat.mes-hall; physics.ins-det; physics.optics
- 文献种类: Manual Script
- 期卷页: 2014年
- 日期: 2014-8-20
- 发布方式: arXiv e-prints
- 备注:arXiv:1408.4396v1; 5 pages, 4 figures
学科领域自然科学 » 物理学
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