论文标题
天线Parton阵雨中的界线电辐射
Collinear Electroweak Radiation in Antenna Parton Showers
论文作者
论文摘要
我们提出了Vincia Parton淋浴中的共线电子辐射的首次实现。由于电牵引理论的手性质，需要在淋浴算法中明确的自旋依赖性。因此，我们使用旋转螺旋形式形式主义来计算螺旋依赖性的分支内核，特别注意处理可能出现的计算中的量规，涉及涉及巨大的电动eletroweak矢量玻色子的纵向极化。这些内核用于构建淋浴算法，其中包括所有可能的截面最终态静电分支，包括由Yang-Mills Triple Triple Vector Boson耦合和所有Higgs耦合以及最初状态的载体波孔排放量引起的。我们纳入了特定于电子理论的特征的处理，例如骨干扰和后坐力效应的效果，以及对电牵引分支和共振衰减之间重叠的初步描述。在高能量的电动分支谱以及对LHC物理学的影响方面的一些合格结果。讨论了未来可能的改进，包括对软效应和旋转效应的处理以及电子链路领域所特有的问题。
We present a first implementation of collinear electroweak radiation in the Vincia parton shower. Due to the chiral nature of the electroweak theory, explicit spin dependence in the shower algorithm is required. We thus use the spinor-helicity formalism to compute helicity-dependent branching kernels, taking special care to deal with the gauge relics that may appear in computation that involve longitudinal polarizations of the massive electroweak vector bosons. These kernels are used to construct a shower algorithm that includes all possible collinear final-state electroweak branchings, including those induced by the Yang-Mills triple vector boson coupling and all Higgs couplings, as well as vector boson emissions from the initial state. We incorporate a treatment of features particular to the electroweak theory, such as the effects of bosonic interference and recoiler effects, as well as a preliminary description of the overlap between electroweak branchings and resonance decays. Some qualifying results on electroweak branching spectra at high energies, as well as effects on LHC physics are presented. Possible future improvements are discussed, including treatment of soft and spin effects, as well as issues unique to the electroweak sector.
