论文标题
温伯格型操作员对原子和核电偶极矩的贡献
Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments
论文作者
论文摘要
The contribution of the CP violating three-gluon Weinberg operator, $\frac{1}{3!} w f^{abc} ε^{νραβ} G^a_{μν} G^b_{αβ} G^{c μ}_ρ$, to the atomic and nuclear EDMs is estimated using QCD sum rules.在通过Weinberg操作员计算斜向和真空之间的过渡矩阵元件后，我们通过使用chirar扰动理论在NLO上确定ISOVECTOR CP-ODD Pion-Nucleon顶点来获得远程CP-ODD核力量。 $^{199} $ hg，$^{129} $ xe的EDMS，$^{225} $ ra，$^2 $ h和$^3 $他最终被给予他，包括全面的不确定性分析。虽然$^{199} $ hg EDM的主要贡献是由内在的核EDM给出的，但$^{129} $ XE原子的贡献可能由Weinberg Operator产生的一杆交换CP-ODD核力量主导。从$^{199} $ HG原子EDM的当前实验数据中，我们获得了Weinberg操作员的上限，$ \ left | w \ right | <4 \ times 10^{ - 10} {\ rm gev}^{ - 2} $如果我们假设它是比例$μ= 1 $ tev的唯一违反CP的来源。
The contribution of the CP violating three-gluon Weinberg operator, $\frac{1}{3!} w f^{abc} ε^{νραβ} G^a_{μν} G^b_{αβ} G^{c μ}_ρ$, to the atomic and nuclear EDMs is estimated using QCD sum rules. After calculating the transition matrix element between the pion and the vacuum through the Weinberg operator, we obtain the long-range CP-odd nuclear force by determining the isovector CP-odd pion-nucleon vertex, using chiral perturbation theory at NLO. The EDMs of $^{199}$Hg, $^{129}$Xe, $^{225}$Ra, $^2$H, and $^3$He are finally given including comprehensive uncertainty analysis. While the leading contribution of the $^{199}$Hg EDM is given by the intrinsic nucleon EDM, that of $^{129}$Xe atom may be dominated by the one-pion exchange CP-odd nuclear force generated by the Weinberg operator. From current experimental data of the $^{199}$Hg atomic EDM, we obtain an upper limit on the Weinberg operator magnitude of $\left|w \right| < 4 \times 10^{-10} {\rm GeV}^{-2}$ if we assume that it is the only source of CP violation at the scale $μ=1$ TeV.
