arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1408.4396hep-excond-mat.mes-hallphysics.ins-detphysics.optics
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利用光悬浮微球搜索毫荷电粒子

Search for Millicharged Particles Using Optically Levitated Microspheres

David C. Moore, Alexander D. Rider, Giorgio Gratta

摘要:

我们报告的结果,从寻找稳定的粒子与电荷> $10^{-5}$ e散装物质在高真空中使用悬浮的电介质微球。在1.4 ng的总样本中未发现此类颗粒的证据,在95%置信水平下,供试材料的每个核子丰度上限为2.5 x $10^{-14}$。这些结果提供了第一个直接搜索的单个粒子与电荷< 0.1电子约束在宏观量的物质,并证明了在真空中使用光学悬浮微球进行灵敏的力测量的能力。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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