Search for a parity-violating long-range spin-dependent interaction
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arXiv
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| Format: | Preprint |
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2025
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| author | Heng, Xing Xu, Zitong Huang, Xiaofei Gong, Dinghui Tian, Guoqing Ji, Wei Fang, Jiancheng Budker, Dmitry Wei, Kai |
| author_facet | Heng, Xing Xu, Zitong Huang, Xiaofei Gong, Dinghui Tian, Guoqing Ji, Wei Fang, Jiancheng Budker, Dmitry Wei, Kai |
| contents | High-sensitivity quantum sensors are a promising tool for experimental searches for beyond-Standard-Model interactions. Here, we demonstrate an atomic comagnetometer operating under a resonantly-coupled hybrid spin-resonance (HSR) regime to probe P-odd, T-even interactions. The HSR regime enables robust nuclear-electron spin coupling, enhancing measurement bandwidth and stability without compromising the high sensitivity of spin-exchange relaxation-free magnetometers. To minimize vibration noise from velocity-modulated sources, we implement a multistage vibration isolation system, achieving a vibration noise reduction exceeding 700-fold. We establish new constraints on vector-boson-mediated parity-violating interactions, improving experimental sensitivity by three orders of magnitude compared to previous limits. The new constraints complement existing astrophysical and laboratory studies of potential extensions to the Standard Model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_00483 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for a parity-violating long-range spin-dependent interaction Heng, Xing Xu, Zitong Huang, Xiaofei Gong, Dinghui Tian, Guoqing Ji, Wei Fang, Jiancheng Budker, Dmitry Wei, Kai Quantum Physics Atomic Physics High-sensitivity quantum sensors are a promising tool for experimental searches for beyond-Standard-Model interactions. Here, we demonstrate an atomic comagnetometer operating under a resonantly-coupled hybrid spin-resonance (HSR) regime to probe P-odd, T-even interactions. The HSR regime enables robust nuclear-electron spin coupling, enhancing measurement bandwidth and stability without compromising the high sensitivity of spin-exchange relaxation-free magnetometers. To minimize vibration noise from velocity-modulated sources, we implement a multistage vibration isolation system, achieving a vibration noise reduction exceeding 700-fold. We establish new constraints on vector-boson-mediated parity-violating interactions, improving experimental sensitivity by three orders of magnitude compared to previous limits. The new constraints complement existing astrophysical and laboratory studies of potential extensions to the Standard Model. |
| title | Search for a parity-violating long-range spin-dependent interaction |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2505.00483 |