论文标题
在Multi-Lepton频道中建模$ t \ Overline {t} w $的不确定性
Modelling uncertainties of $t\overline{t}W$ in multi-lepton channel
论文作者
论文摘要
我们比较了固定顺序和parton淋浴匹配该过程的预测$ {pp \ eligharrow \ ell^+n {\ ell} $ \ MATHCAL {O}（α_s^3α^6）$和$ \ MATHCAL {O}（α_Sα^8）$。比较以$ \ sqrt {s} = 13 $ tev在LHC的集成和差异基金水平上进行。在没有Parton淋浴匹配程序的情况下，包括在QCD中NLO的此过程的完整外壳效果，我们提出了新的处方。它使在QCD的NLO匹配的Parton淋浴匹配的当前可用的Parton淋浴预测中可以包含近似完全的外壳效果。
We compare fixed order and parton shower matched predictions for the process ${pp\rightarrow \ell^+ν_{\ell} \ell^-\barν_{\ell} \ell^{\pm}ν_{\ell} b\bar{b}+X}$ at NLO in QCD, including the orders $\mathcal{O}(α_s^3α^6)$ and $\mathcal{O}(α_sα^8)$. The comparison is performed at the integrated and differential fiducial level at the LHC with $\sqrt{s}=13$ TeV. In the absence of parton shower matching procedure that includes the full off-shell effects for this process at NLO in QCD, we propose a new prescription. It enables the inclusion of approximate full off-shell effects to currently available parton shower matched predictions at NLO in QCD.
