论文标题
用CP侵入性相互作用将轴突弯曲
Cornering the axion with CP-violating interactions
论文作者
论文摘要
除了CP扩展相互作用外，轴和类似轴的颗粒也可能具有与核子和电子相互作用的较小的CP侵入标量相互作用。任何这种相互作用都将产生宏观单极 - 偶极力，可以通过实验搜索。当对标量相互作用的最佳实验限制与限制伪尺度相互作用的恒星能量损失参数相结合时，可以将强界设置在CP侵入轴承耦合上，这些轴向耦合几乎与QCD模型的期望相交。多年来，天体物理和实验室测试都得到了改善。我们提供了这些约束的急需的最新汇编，以40到130的因素在某些参数空间中的改善。我们主张实验机会，而没有天体物理或深色 - 物理假设，以跟踪其较小的参数参数空间探索范围的轴突。
Besides CP-preserving interactions, axions and axion-like particles may also have small CP-violating scalar Yukawa interactions with nucleons and electrons. Any such interaction will generate macroscopic monopole-dipole forces which can be searched for experimentally. When the best experimental limits on scalar interactions are combined with stellar energy-loss arguments constraining pseudoscalar interactions, strong bounds can be set on CP-violating axion couplings which almost intersect the expectation for QCD models. Over the years, both astrophysical and laboratory tests have improved. We provide a much-needed up-to-date compilation of these constraints, showing improvements in some regions of parameter space by factors between 40 and 130. We advocate experimental opportunities, without astrophysical or dark-matter assumptions, to track down the axion in the lesser-explored corners of its parameter space.
