论文标题
Twist-3 Gluon Sivers对重型Quarkonium生产的应用的效果
Reformulation of the twist-3 gluon Sivers effect toward the application to the heavy quarkonium production
论文作者
论文摘要
在本文中，我们提出了一种新的计算方法，用于共线性分解方法中的Twist-3 Gluon Sivers效应。称为POL计算的方法已用于推导单个横向旋转不对称（SSA）作为标准方法的横截面公式。我们指出，当我们试图将极力计算应用于重夸克产物中的SSA时，我们遇到了一个问题，其强膦机制由非相关QCD（NRQCD）框架描述。我们表明，新的计算方法解决了这个问题，并成功地再现了通过POL计算得出的已知结果。我们的新方法将Twist-3计算技术的适用性扩展到了重夸克生产中，这是研究Gluon Sivers效应的理想可观察力。
In this paper, we propose a new calculation method for the twist-3 gluon Sivers effect within the collinear factorization approach. The method called pole calculation has been used to derive the cross section formula for the single transverse-spin asymmetry(SSA) as a standard method. We point out that we encounter a problem when we try to apply the pole calculation to the SSA in the heavy quarkonium production whose hadronization mechanism is described by non-relativistic QCD(NRQCD) framework. We show that the new calculation method solves this problem and successfully reproduces known results derived by the pole calculation. Our new method extends the applicability of the twist-3 calculation technique to heavy quarkonium productions which are ideal observables for the investigation of the gluon Sivers effect.
