论文标题
$ w^\ pm z $在nnlo qcd上的生产，而nlo ew匹配了parton阵雨，用minnlo $ _ {\ rm ps} $
$W^\pm Z$ production at NNLO QCD and NLO EW matched to parton showers with MiNNLO$_{\rm PS}$
论文作者
论文摘要
我们考虑$ w^\ pm z $在HADRONIC碰撞中产生，并在QCD和Electroweak（EW）扰动理论中提供了与Parton Showers相匹配的高精度预测。为此，我们使用Minnlo $ _ {\ rm ps} $方法将临近临时的订单QCD校正与Parton淋浴匹配，并始终将它们与与Parton Showers相匹配的近后领先顺序的EW校正结合在一起。这是在任何对撞机过程中首次实现事件生成的准确性，我们详细研究了不同选择在QCD和EW校正以及QCD和QCD和QED淋浴中的影响。 Spin correlations, interferences and off-shell effects are retained by considering the full leptonic processes $pp \to \ell^+\ell^-\ell'^\pm ν_\ell'$ with $\ell'\neq\ell$ and $\ell'=\ell$ without approximations, and the matching to QED radiation is performed preserving the resonance structure of the process.我们发现NNLO QCD预测在内，包括QCD和QED淋浴效果在相位空间的整体区域中提供了很好的近似值，而EW效应在运动学分布的高能量尾巴中变得越来越重要。我们的默认预测与最近的Atlas数据非常吻合。
We consider $W^\pm Z$ production in hadronic collisions and present high-precision predictions in QCD and electroweak (EW) perturbation theory matched to parton showers. To this end, we match next-to-next-to-leading order QCD corrections to parton showers using the MiNNLO$_{\rm PS}$ method and consistently combine them with next-to-leading order EW corrections matched to parton showers. This is the first time such accuracy in the event generation is achieved for any collider process, and we study in detail the impact of different choices in the combination of QCD and EW corrections as well as QCD and QED showers. Spin correlations, interferences and off-shell effects are retained by considering the full leptonic processes $pp \to \ell^+\ell^-\ell'^\pm ν_\ell'$ with $\ell'\neq\ell$ and $\ell'=\ell$ without approximations, and the matching to QED radiation is performed preserving the resonance structure of the process. We find that NNLO QCD predictions including QCD and QED shower effects provide a very good approximation in the bulk-region of the phase space, while EW effects become increasingly important in the high-energy tails of kinematic distributions. Our default predictions are in excellent agreement with recent ATLAS data.
