Lorentz and CPT Tests in Neutron and Storage-Ring EDM Experiments
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866915727765667840 |
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| author | Ding, Yunhua |
| author_facet | Ding, Yunhua |
| contents | We investigate Lorentz- and CPT-violating effects in neutron and storage-ring electric dipole moment (EDM) experiments within the framework of the Standard-Model Extension (SME). For neutron EDM experiments, perturbation theory is applied to derive leading-order contributions to the spin precession frequency arising from Lorentz and CPT violation. For storage-ring experiments, a generalized Bargmann-Michel-Telegdi equation is used to determine the corresponding spin-precession modifications. The analysis establishes explicit correspondences between measured EDMs and specific SME coefficients, providing a basis for setting the first limits on several previously unconstrained coefficients for Lorentz violation in future studies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_08899 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Lorentz and CPT Tests in Neutron and Storage-Ring EDM Experiments Ding, Yunhua High Energy Physics - Phenomenology We investigate Lorentz- and CPT-violating effects in neutron and storage-ring electric dipole moment (EDM) experiments within the framework of the Standard-Model Extension (SME). For neutron EDM experiments, perturbation theory is applied to derive leading-order contributions to the spin precession frequency arising from Lorentz and CPT violation. For storage-ring experiments, a generalized Bargmann-Michel-Telegdi equation is used to determine the corresponding spin-precession modifications. The analysis establishes explicit correspondences between measured EDMs and specific SME coefficients, providing a basis for setting the first limits on several previously unconstrained coefficients for Lorentz violation in future studies. |
| title | Lorentz and CPT Tests in Neutron and Storage-Ring EDM Experiments |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.08899 |