论文标题
大规模夸克的定向事件形状
Oriented Event Shapes for massive Quarks
论文作者
论文摘要
在这项工作中，我们介绍了所谓的面向事件形状分布的计算，该分布最高为$ \ Mathcal {o}（α_s）$，以及总方向的横截面，其中不查看最终状态中粒子的动量分布的几何特性。我们考虑了矢量和轴向矢量电流，对于前者，我们发现在$ \ MATHCAL {O}（α_s^0）$的情况下，与无质量近似相比，它转化为显着的增强。我们的结果是分析的重要组成部分，旨在以高精度确定强耦合。
In this work we present the computation of so-called oriented event-shape distributions for massive quarks up to $\mathcal{O}(α_s)$, along with the total oriented cross section in which one does not look at the geometric properties of the momentum distribution for particles in the final state. We consider the vector and axial-vector currents, and for the former, we find a non-vanishing result at $\mathcal{O}(α_s^0)$ that translates into a significant enhancement as compared to the massless approximation. Our results are an important ingredient for analyses that aim to determine the strong coupling with high accuracy.
