Constraints on the Velocity and Spin Dependent Exotic Interaction at the Micrometer Range

Ding, Jihua; Wang, Jianbo; Zhou, Xue; Liu, Yu; Sun, Ke; Adeyeye, Adekunle Olusola; Fu, Huixing; Ren, Xiaofang; Li, Sumin; Luo, Pengshun; Lan, Zhongwen; Yang, Shanqing; Luo, Jun

Abstract

We report on an experimental test of the velocity and spin dependent exotic interaction that can be mediated by new light bosons. The interaction is searched by measuring the force between a gold sphere and a microfabricated magnetic structure using a cantilever. The magnetic structure consists of stripes with antiparallel 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 sets the strongest laboratory constraints on the coupling constant between electrons and nucleons at the micrometer range with f⊥ < 5.3 × 10−8 at λ ¼ 5 μm.

Citation

Ding, J., Wang, J., Zhou, X., Liu, Y., Sun, K., Adeyeye, A. O., Fu, H., Ren, X., Li, S., Luo, P., Lan, Z., Yang, S., & Luo, J. (2020). Constraints on the Velocity and Spin Dependent Exotic Interaction at the Micrometer Range. Physical Review Letters, 124(16), Article 161801. https://doi.org/10.1103/physrevlett.124.161801

• Journal Article Type: Article
• Acceptance Date: Mar 25, 2020
• Online Publication Date: Apr 23, 2020
• Publication Date: Apr 30, 2020
• Deposit Date: Apr 23, 2020
• Publicly Available Date: May 6, 2020
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 124
• Issue: 16
• Article Number: 161801
• DOI: https://doi.org/10.1103/physrevlett.124.161801
• Public URL: https://durham-repository.worktribe.com/output/1272474