Z极正负电子碰撞中重夸克前后电荷不对称性的QCD修正：真的是个问题吗？
Revisiting QCD corrections to the forward-backward charge asymmetry of heavy quarks in electron-positron collisions at the Z pole: really a problem?
摘要：
本文较详细地评述了在Z极$\mathrm{e^+e^-\rightarrow Q\overline{Q}(g)}$过程中对重夸克前后电荷不对称性测量的QCD修正。我们表明，这些修正的大小可以减少一个数量级，通过使用简单的切割射流共线。这样的减少预计将导致系统的不确定性在$Δ\mathrm{A_{FB}^{0,Q}} \approx 10^{-4}$水平，开辟了道路，以高精度电弱测量与重口味在未来的高亮度$\mathrm{e^+e^-}$对撞机像FCC-ee。
英文摘要：
We review in some detail the QCD corrections to the measurement of the forward-backward charge asymmetry of heavy quarks in the $\mathrm{e^+e^-\rightarrow Q\overline{Q}(g)}$ process at the Z pole. We show that the size of these corrections can be reduced by an order of magnitude by using simple cuts on jet acollinearity. Such a reduction is expected to lead to systematic uncertainties at the $Δ\mathrm{A_{FB}^{0,Q}} \approx 10^{-4}$ level, opening up the path to high precision electroweak measurements with heavy flavors at future high luminosity $\mathrm{e^+e^-}$ colliders like the FCC-ee.
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