论文标题
NLO QCD+EW的双极$ WZ $ HADRONED生产:计算方法和进一步的结果
Doubly-polarized $WZ$ hadronic production at NLO QCD+EW: Calculation method and further results
论文作者
论文摘要
大型强子对撞机(LHC)的$ W^\ pm z $对的双极生产均以electroweak(EW)和QCD校正的临近订单(NLO)精度提出,包括使用双实极近似的计算方法的详细描述。使用Atlas Fettucial Cuts和$ WZ $ s-oss System中定义的极化分布,特别针对$ e^ - \barν_eμ^+μ^ - $通道的$ W^ - z $ case尤其是针对$ e^ - \barν_eμ^+μ^ - $ tev lhc的数值结果。在大多数运动学分布中,相对于NLO QCD预测的NLO EW校正相对于NLO QCD预测的校正小于$ 5 \%$,但在某些分布中,可以达到$ 10 \%$的水平,例如Lepton Transmentim Momentum分布或Electron和$ Z $ BOSON之间的快速分离。对于不同的极化,EW校正并不均匀。提出了新的Atlas测量极化分数与我们的理论预测之间的比较。
The doubly-polarized production of $W^\pm Z$ pairs at the Large Hadron Collider (LHC) is presented at next-to-leading order (NLO) accuracy both for the electroweak (EW) and QCD corrections, including a detailed description of the calculational method using the double-pole approximation. Numerical results at the 13 TeV LHC are presented in particular for the $W^- Z$ case in the $e^-\barν_e μ^+μ^-$ channel using ATLAS fiducial cuts and for polarized distributions defined in the $WZ$ center-of-mass system. The NLO EW corrections relative to the NLO QCD predictions are found to be smaller than $5\%$ in most kinematic distributions, but can reach the level of $10\%$ in some distributions such as lepton transverse momentum distributions or rapidity separation between the electron and the $Z$ boson. EW corrections are not uniform for different polarizations. A comparison between the new ATLAS measurement of polarization fractions to our theoretical prediction is presented.