论文标题
来自全息QCD的MUON $ G-2 $的HADRONIC LIND-LING-LIGHT贡献，已解决$ u（1）_a $问题
Hadronic light-by-light contribution to the muon $g-2$ from holographic QCD with solved $U(1)_A$ problem
论文作者
论文摘要
由于Katz和Schwartz，我们采用了相对最小的硬壁广告/QCD的延伸，考虑到U（1）$ _ a $ a $异常用于计算伪尺度和轴向矢量媒介对Muon $ a__a_μ$a_μ$a_μ$ a nomalosemalitemantagemosemantage Mosons of pseudoscal和轴向矢量的散射贡献。通过将Gluon冷凝物作为一个额外的可调节参数，除了由$f_π$和pion，kaon和rho masses固定的参数，我们获得了非常准确的适合$η$和$η''''$ uss uss uss uss uss uss uss uss uss uss of to photons，从而与$a_μ$ $a_μ$贡献的衰减率与MUON $ $ G-2 $ g-2理论的标准模型结果达成了完全一致性。转向不太了解的轴向矢量贡献，我们更新了没有U（1）$ _ a $ breaking的风味对称硬壁广告/QCD模型获得的先前预测。
We employ the comparatively minimal extension of hard-wall AdS/QCD due to Katz and Schwartz which takes into account the U(1)$_A$ anomaly for computing hadronic light-by-light scattering contributions of pseudoscalar and axial vector mesons to the anomalous magnetic moment of the muon $a_μ$. By including a gluon condensate as one extra tunable parameter besides those fixed by $f_π$ and the pion, kaon, and rho masses, we obtain remarkably accurate fits for $η$ and $η'$ masses and their decay rates to photons, leading to $a_μ$ contributions in complete agreement with the Standard Model result by the Muon $g-2$ Theory Initiative. Turning to the less well understood axial vector contributions, we update our previous predictions obtained in flavor-symmetric hard-wall AdS/QCD models without U(1)$_A$ breaking.
