论文标题
$ cp $ - 竞争性的耐药性相互作用和来自顺磁分子的质子EDM的限制
Limits on $CP$-violating hadronic interactions and proton EDM from paramagnetic molecules
论文作者
论文摘要
分子（THO，HFF $^+$，YBF，YBOH，BAF，PBO等）的顺磁地面或亚磁场激发态的实验提供了对电子电动偶极矩（EDM）和偶联常数$ C_ {SP} $ contact semileptonic互动的强大限制。我们计算了由于电力和磁性核子相互作用而导致的核子EDM引起的$ C_ {SP} $的新贡献。这使我们能够从$ cp $竞争参数上使用顺磁分子的实验提高极限$π$ -Meson-Nucleon耦合。我们的结果也可以用于搜索产生振荡$ \barθ$的轴线暗物质。
Experiments with paramagnetic ground or metastable excited states of molecules (ThO, HfF$^+$, YbF, YbOH, BaF, PbO, etc.) provide strong constraints on electron electric dipole moment (EDM) and coupling constant $C_{SP}$ of contact semileptonic interaction. We compute new contributions to $C_{SP}$ arising from the nucleon EDMs due to combined electric and magnetic electron-nucleon interaction. This allows us to improve limits from the experiments with paramagnetic molecules on the $CP$-violating parameters, such as the proton EDM, $|d_p|< 1.1\times 10^{-23} e\cdot $cm, the QCD vacuum angle, $|\bar θ|<1.4\times 10^{-8}$, as well as the quark chromo-EDMs and $π$-meson-nucleon couplings. Our results may also be used to search for the axion dark matter which produces oscillating $\barθ$.
