论文标题
在光谱搜索新玻色子中，两源国王情节非线性的证据
Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson
论文作者
论文摘要
同位素移位的光学精度光谱可以用于测试标准模型以外的新力，并确定原子核的基本特性。我们测量同位素在高度禁止的$ {}^2S_ {1/2} \ rightArrow {}^2f_ {7/2} $ octupole过渡$^{168,170,172,172,174,174,176} $ yb yb yb yb yb yb yb ions上。当结合YB $^+$中的先前测量结果以及YB中最新的测量值时，数据表明，国王情节非线性高达240美元$σ$。实验数据所表现出的趋势通过Fayans功能来解释核密度功能理论。我们还发现，具有4.3 $σ$ profetent，这是非线性的第二个不同来源，并讨论了其可能的起源。
Optical precision spectroscopy of isotope shifts can be used to test for new forces beyond the Standard Model, and to determine basic properties of atomic nuclei. We measure isotope shifts on the highly forbidden ${}^2S_{1/2} \rightarrow {}^2F_{7/2}$ octupole transition of trapped $^{168,170,172,174,176}$Yb ions. When combined with previous measurements in Yb$^+$ and very recent measurements in Yb, the data reveal a King plot nonlinearity of up to 240$σ$. The trends exhibited by experimental data are explained by nuclear density functional theory calculations with the Fayans functional. We also find, with 4.3$σ$ confidence, that there is a second distinct source of nonlinearity, and discuss its possible origin.
