论文标题
$ e^{+} e^{ - } $ nihilation及其对$（g-2）_ $ $
Two and Three Pseudoscalar Production in $e^{+}e^{-}$ annihilation and their contributions to $(g-2)_μ$
论文作者
论文摘要
$ e^{+} e^{ - } $ niHilation的一致研究成两个（$π^{+}π^{ - } $，$ k^{+} k^{ - } $伪内梅森的生产是在能源区域的共振性手性理论$ e \ lyssim 2 \，\ mathrm {gev} $的框架内进行的。 {[} l的工作。 Y. Dai，J。Portolés和O. Shekhovtsova，物理。 Rev. D 88,056001（2013）{]}通过最新的实验数据和两种伪级介子生产的联合分析进行了重新审视。因此，我们评估了这两个和三个伪尺度过程对若子异常磁矩的最低阶次真空极化贡献。我们还估计了一些由相同的Hadronic真空极化领导的高阶添加。结合标准模型的其他贡献，理论预测仍然不同于$（21.6 \ pm 7.4）\ times 10^{ - 10} $（2.9 $σ$）的实验值。
A coherent study of $e^{+}e^{-}$ annihilation into two ($π^{+}π^{-}$,$K^{+}K^{-}$) and three ($π^{+}π^{-}π^{0},π^{+}π^{-}η$) pseudoscalar meson production is carried out within the framework of resonance chiral theory in energy region $E\lesssim 2 \, \mathrm{GeV}$. The work of {[}L. Y. Dai, J. Portolés, and O. Shekhovtsova, Phys. Rev. D 88,056001 (2013){]} is revisited with the latest experimental data and a joint analysis of two pseudoscalar meson production. Hence, we evaluate the lowest order hadronic vacuum polarization contributions of those two and three pseudoscalar processes to the anomalous magnetic moment of the muon. We also estimate some higher-order additions led by the same hadronic vacuum polarization. Combined with the other contributions from the standard model, the theoretical prediction differs still by $(21.6 \pm 7.4)\times 10^{-10}$ (2.9$σ$) from the experimental value.
