论文标题
使用Ultracold YBF分子测量电子EDM的方法
Methods for measuring the electron EDM using ultracold YbF molecules
论文作者
论文摘要
电子偶极矩（EEDM）的测量值是对标准模型以外的物理测试。我们描述了如何使用超低YBF分子将EEDM测量的精度提高2至三个数量级。使用数值模拟，我们展示了磁性焦点，二维横向激光冷却和频率射击激光的组合如何产生强烈，缓慢，高度结合的分子束。我们展示了如何制造YBF分子的磁光陷阱以及如何将分子加载到光学晶格中。可以使用缓慢的分子束或使用被困在晶格中的分子进行EEDM测量。我们估计每种情况下都可以达到的统计灵敏度，并考虑如何减少噪声来源，从而可以达到灵敏度的射击限制。我们还考虑了由于磁场和矢量光移以及如何控制它们引起的系统效应。
Measurements of the electron's electric dipole moment (eEDM) are demanding tests of physics beyond the Standard Model. We describe how ultracold YbF molecules could be used to improve the precision of eEDM measurements by two to three orders of magnitude. Using numerical simulations, we show how the combination of magnetic focussing, two-dimensional transverse laser cooling, and frequency-chirped laser slowing, can produce an intense, slow, highly-collimated molecular beam. We show how to make a magneto-optical trap of YbF molecules and how the molecules could be loaded into an optical lattice. eEDM measurements could be made using the slow molecular beam or using molecules trapped in the lattice. We estimate the statistical sensitivity that could be reached in each case and consider how sources of noise can be reduced so that the shot-noise limit of sensitivity can be reached. We also consider systematic effects due to magnetic fields and vector light shifts and how they could be controlled.
