论文标题
中子电偶极矩与三叶草费米子
Neutron Electric Dipole Moments with Clover Fermions
论文作者
论文摘要
我们为QCD $θ$ -Term，Weinberg Trix-Gluon和Quark Chromo-Edm Operators从我们正在进行的晶格计算中使用Clover Valence Quarks在MILC HISQ Lattices上进行的QCD $ -EDM和Quark Chromo-Edm操作员提出了对中子EDM的初步结果。我们使用梯度流技术使晶格平滑并重新构成Gluonic操作员，并使用Schwinger Source方法将夸克Chromo-Edm的相互作用结合在夸克传播器中。对于QCD $θ$ -Term和Weinberg的三胶合运算符，我们报告了来自4个晶格间距和3个pion质量的8个集团的梯度流程方案，包括2个物理锥体质量集合。对于Quark Chromo-Edm，在两个晶格间距上呈现了纯正的结果，$ a = 0.12 $和$ 0.09 $ fm和两个pion群体，$m_π= 310 $ MEV和$ 220 $ MEV。
We present preliminary results for the contributions to the neutron EDM arising from the QCD $θ$-term, the Weinberg three-gluon and the quark chromo-EDM operators from our ongoing lattice calculations using clover valence quarks on the MILC HISQ lattices. We use the gradient-flow technique to smooth the lattices and renormalize the gluonic operators, and use the Schwinger source method to incorporate the quark chromo-EDM interactions in the quark propagator. For the QCD $θ$-term and the Weinberg three-gluon operator, we report results in the gradient-flow scheme from 8 ensembles at four lattice spacings and three pion masses, including 2 physical pion mass ensembles. For the quark chromo-EDM, unrenormalized results are presented at two lattice spacings, $a=0.12$ and $0.09$ fm, and two pion masses, $M_π= 310$ MeV and $220$ MeV.
