The searches for CP violating effects in diatomic molecules, such as HfF+ and ThO, are typically interpreted as a probe of the electron’s electric dipole moment (eEDM), a new electron-nucleon interaction, and a new electron-electron interaction. However, in the case of a nonvanishing nuclear spin, a new CP violating nucleon-nucleon long-range force will also affect the measurement, providing a new interpretation of the eEDM experimental results. Here, we use the HfF+ eEDM search and derive a new bound on this hypothetical interaction, which is the most stringent from terrestrial experiments in the 1 eV–10 keV mass range. These multiple new physics sources motivate independent searches in different molecular species for CP violation at low energy that result in model independent bounds, which are insensitive to cancellation among them. Published by the American Physical Society 2024

中文翻译：

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在双原子 eEDM 搜索中限制 CP 违背 Nucleon-Nucleon 长程相互作用


在双原子分子（如 HfF+ 和 ThO）中搜索 CP 违控效应通常被解释为电子电偶极矩 （eEDM） 的探针、新的电子-核子相互作用和新的电子-电子相互作用。然而，在核自旋未消失的情况下，违反核子-核子远程力的新 CP 也会影响测量，为 eEDM 实验结果提供了新的解释。在这里，我们使用 HfF+eEDM 搜索并推导出这个假设相互作用的新边界，这是 1 eV–10 keV 质量范围内的地面实验中最严格的。这些多个新的物理源激发了在不同分子种类中独立搜索低能量下的 CP 违规，从而导致模型无关的边界，这些边界对它们之间的抵消不敏感。 美国物理学会 2024 年出版