论文标题
测量重极分子中的核磁四极矩
Measuring the nuclear magnetic quadrupole moment in heavy polar molecules
论文作者
论文摘要
扩展粒子物理学的标准模型的理论通常会引入违反电荷 - 平衡（CP）对称性的新相互作用。可以通过测量其核磁性四极矩（MQM）来探测原子核内的CP侵略效应。当使用含有四极变形的核的重极分子时，这种测量的敏感性会增强。我们确定分子的能级如何通过MQM转移以及如何测量这些移位。测量方案需要在磁性亚级别的叠加中分子，而磁性亚平台因角动量的许多单位而异。我们制定了准备这些状态的通用计划。最后，我们考虑可以达到的灵敏度，表明该方法可以减少几个CP侵入参数的当前不确定性。
Theories that extend the Standard Model of particle physics often introduce new interactions that violate charge-parity (CP) symmetry. CP-violating effects within an atomic nucleus can be probed by measuring its nuclear magnetic quadrupole moment (MQM). The sensitivity of such a measurement is enhanced when using a heavy polar molecule containing a nucleus with quadrupole deformation. We determine how the energy levels of a molecule are shifted by the MQM and how those shifts can be measured. The measurement scheme requires molecules in a superposition of magnetic sub-levels that differ by many units of angular momentum. We develop a generic scheme for preparing these states. Finally, we consider the sensitivity that can be reached, showing that this method can reduce the current uncertainties on several CP-violating parameters.
