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Constraints on the velocity and spin dependent exotic interaction at the micrometer range
Physical Review Letters ( IF 9.227 ) Pub Date : 
Jihua Ding, Jianbo Wang, Xue Zhou, Yu Liu, Ke Sun, Adekunle Olusola Adeyeye, Huixing Fu, Xiaofang Ren, Sumin Li, Pengshun Luo, Zhongwen Lan, Shanqing Yang, and Jun Luo

We report on an experimental test of the velocity and spin dependent exotic interaction which can be mediated by new light bosons. The interaction is searched by measuring the force between a gold sphere and a micro-fabricated magnetic structure using a cantilever. The magnetic structure consists of stripes with anti-parallel electron spin polarization so that the exotic interaction between the polarized electrons in the magnetic structure and the unpolarized nucleons in the gold sphere varies periodically, which helps to suppress the spurious background signals. The experiment set the strongest laboratory constraints on the coupling constant between electrons and nucleons at the micrometer range with $f_
更新日期:2020-03-26

 

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