论文标题
使用平均抗旋转旋转耦合偶联以测量TL核氨基烷矩在TLF分子束中
Using parity-nonconserving spin-spin coupling to measure the Tl nuclear anapole moment in a TlF molecular beam
论文作者
论文摘要
使用TLF分子束的实验正在通过Centrex协作开发，以搜索违反时间反转（T）和平等（P）不变性的HADRONIC相互作用。在这里，我们建议使用相同的光束来寻找由TL核的Anapole矩引起的，通过TLF中的两个核旋转的矢量耦合来保存但p-nonconservoring（PNC）效应。为了测量核方矩矩，CentRex中的直流电场和磁场被核自旋翻转过渡的RF场取代。我们将相对论耦合聚类法与相对论密度功能理论结合使用，以计算分子PNC自旋旋转矢量偶联常数，从而将实验信号与Anapole矩联系起来。发现在同一方法中计算出的P-Constronvorving自旋旋转耦合常数与可用的实验数据非常吻合。
An experiment utilizing a TlF molecular beam is being developed by the CeNTREX collaboration to search for hadronic interactions that violate both time-reversal (T) and parity (P) invariance. Here we propose to use the same beam to look for a T-invariance conserving but P-nonconserving (PNC) effect induced by the anapole moment of the Tl nucleus, via a vector coupling of the two nuclear spins in TlF. To measure the nuclear anapole moment, the dc electric and magnetic fields in CeNTREX are replaced by rf fields resonant with a nuclear spin flip transition. We adapt the relativistic coupled cluster method in a combination with relativistic density functional theory for the calculation of the molecular PNC spin-spin vector coupling constant that links the experimental signal with the anapole moment. The value of the P-conserving spin-spin coupling constant calculated within the same approach is found to be in good agreement with available experimental data.
