Limits on Axions and Axionlike Particles within the Axion Window Using a Spin-Based Amplifier

作者：Yuanhong Wang, Haowen Su, Min Jiang, Y. Huang, Yushu Qin, Chang Guo, Zehao Wang, D. Hu, Wei Ji, Pavel Fadeev, Xinhua Peng, Dmitry Budker · 发表于：Physical Review Letters · 年份：2022 · DOI：10.1103/physrevlett.129.051801 · 被引用次数：48 · 研究领域：Dark Matter and Cosmic Phenomena、Atomic and Subatomic Physics Research、Quantum, superfluid, helium dynamics

Searches for the axion and axionlike particles may hold the key to unlocking some of the deepest puzzles about our Universe, such as dark matter and dark energy. Here, we use the recently demonstrated spin-based amplifier to constrain such hypothetical particles within the well-motivated "axion window" (10 μeV-1 meV) through searching for an exotic dipole-dipole interaction between polarized electron and neutron spins. The key ingredient is the use of hyperpolarized long-lived ^{129}Xe nuclear spins as an amplifier for the pseudomagnetic field generated by the exotic interaction. Using such a spin sensor, we obtain a direct upper bound on the product of coupling constants g_{p}^{e}g_{p}^{n}. The spin-based amplifier technique can be extended to searches for a wide variety of hypothetical particles beyond the standard model.