nEDM从θ项和chromoEDM运算符
nEDM from the theta-term and chromoEDM operators
摘要：
在以前的工作中，我们表明，未解决的激发态污染提供了一个主要来源的系统不确定性的计算核子电偶极矩由于QCD拓扑项θ。在这里，我们扩展到夸克色电偶极矩算子（qcEDM）的计算。我们还定量地显示了混合的qcEDM与低维运营商的晶格上的影响。最后，我们给出了QCD拓扑项的酉三叶草计算的初步结果。
英文摘要：
In a previous work, we showed that unresolved excited state contaminations provide a major source of systematic uncertainty in the calculation of the nucleon electric dipole moment due to the QCD topological term theta. Here we extend the calculation to the quark chromo-electric dipole moment operator (qcEDM). We also show quantitatively the impact of the mixing of the qcEDM with lower-dimensional operators on the lattice. Finally, we present preliminary results from a unitary clover-on-clover calculation for the QCD topological term.
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