论文标题
Møller散射在NNLO的耐药作用
Hadronic effects in Møller scattering at NNLO
论文作者
论文摘要
在低能量下的两个不同方案中研究了对极化moller散射的两环电动校正。我们发现有限的$ q^2 $更正可以很好地控制。对$γz$两点功能的耐摄动和扰动QCD校正是通过低能的弱混合角度纳入的，这在电子$ q^e_w $的弱电荷中引入了$ 0.08 \ times10^{ - 3} $的误差。此外，通过研究方案依赖性，我们获得了当前扰动电动不确定性的估计值，$Δq^e_w \ oft0.23 \ times10^{ - 3} $，其比moller实验$（Δq_W^e = 1.11 = 1.11 = 1.1^times10^^33}的精确度估计的精度小五倍。未来的工作是进一步减少理论错误的可能性。
Two-loop electroweak corrections to polarized Moller scattering are studied in two different schemes at low energies. We find the finite $Q^2$ corrections to be well under control. The hadronic and perturbative QCD corrections to the $γZ$ two-point function are incorporated through the weak mixing angle at low energies, which introduce an error of $0.08\times10^{-3}$ in the weak charge of the electron $Q^e_W$. Furthermore, by studying the scheme dependence, we obtain an estimate of the current perturbative electroweak uncertainty, $δQ^e_W\approx0.23\times10^{-3}$, which is five times smaller than the precision estimated for the MOLLER experiment $(δQ_W^e=1.1\times10^{-3})$. Future work is possible to reduce the theory error further.
