论文标题
Lepton Angular分布$ W $ Boson Productions
Lepton angular distribution of $W$ boson productions
论文作者
论文摘要
Lepton Angular分布系数$ a_i $ $ Z $ BOSON的生产$ PP $，$ \ bar p p $ collisions已在LHC和Tevatron上测量。最近的一项研究表明，可以使用直观的几何方法很好地描述了测得的角度分布系数的许多特征，包括横向动量（$ q_t $）和速度依赖性和违反Lam-Tung关系的违规。在本文中，我们扩展了这种几何方法，以描述$ \ bar {p} p $ collisions在tevatron上产生的$ W $玻色子的角度分布系数。我们首先将数据与$ \ Mathcal {O}（α_s^2）$的扰动QCD计算进行比较。然后，我们证明可以通过几何方法很好地描述数据和QCD计算。还讨论了对LHC能源的未来研究的影响。
The lepton angular distribution coefficients $A_i$ for $Z$ boson production in $pp$ and $\bar p p$ collisions have been measured at the LHC and the Tevatron. A recent study showed that many features of the measured angular distribution coefficients, including the transverse momentum ($q_T$) and rapidity dependencies and the violation of the Lam-Tung relation, can be well described using an intuitive geometric approach. In this paper, we extend this geometric approach to describe the angular distribution coefficients for $W$ boson produced in $\bar{p} p$ collisions at the Tevatron. We first compare the data with a perturbative QCD calculation at $\mathcal{O}(α_s^2)$. We then show that the data and QCD calculations can be well described with the geometric approach. Implications for future studies at the LHC energy are also discussed.
