论文标题
LHC的T渠道单高生产中的Top-Quark质量测定
Top-quark mass determination from t-channel single top production at the LHC
论文作者
论文摘要
我们在LHC的T通道单热产量中使用Leptonic可观察物研究了顶级质量的测定。我们证明了输入顶夸克质量上带电的轻子顿的横向动量的灵敏度。我们在QCD中以狭窄的宽度近似和结构函数方法的方式介绍了近距到邻次领导顺序（NNLO）的预测。讨论了由于Parton淋浴和强环化，非谐振和非成分贡献而进行的进一步校正。为了减少SM背景的影响，我们建议使用电荷加权分布进行测量，即带电和负电荷的带电Lepton的分布之间的差异。通过对信号和背景过程进行建模，我们发现（HL-）LHC的投影是有希望的，并且提取的顶级夸克质量的总理论不确定性约为1 $ \ sim $ 2 GEV。
We study the determination of the top-quark mass using leptonic observables in t-channel single top-quark production at the LHC. We demonstrate sensitivity of transverse momentum of the charged lepton on the input top-quark mass. We present predictions at next-to-next-to-leading order (NNLO) in QCD with narrow width approximation and structure function approach. Further corrections due to parton shower and hadronization, non-resonant and non-factorized contributions are discussed. To reduce impact of SM backgrounds we propose to use the charge weighted distribution for the measurement, i.e., differences between distributions of charged lepton with positive and negative charges. By modeling both signal and background processes, we found the projections for (HL-)LHC to be promising, with a total theoretical uncertainty on the extracted top-quark mass of about 1 $\sim$ 2 GeV.
