论文标题
在wandzura-wilczek近似中的横向单个自旋不对称的Odderon机制上
On the odderon mechanism for transverse single spin asymmetry in the Wandzura-Wilczek approximation
论文作者
论文摘要
我们计算向前$ p^\ uparrow p \ to hx $的横向单个旋转不对称，而$ p^\ uparrow a \ to hx $碰撞是从Kovchegov和Sievert建议的ODDERON机制中[1]。在颜色玻璃冷凝物有效理论的混合方法中工作，我们首先将横向极化质子$ p^\ uparrow $的相关共线parton分布函数（PDF）作为内在的twist-3 $ g_t（x）$分布。我们进一步认为，除固有的twist-3 pdf外，完整的极化横截面还包含运动学和动力学扭转-3 PDF的贡献。通过限制掉落动态扭曲3 pdfs的wandzura-wilczek近似，我们发现在强耦合中，Odderon贡献了二极化横截面的ODDERON贡献对涵盖强子产生的偏振横截面的贡献恰好为零。
We compute the transverse single spin asymmetry in forward $p^\uparrow p \to hX$ and $p^\uparrow A \to hX$ collisions from the odderon mechanism originally suggested by Kovchegov and Sievert [1]. Working in the hybrid approach of the Color Glass Condensate effective theory we firstly identify the relevant collinear parton distribution function (PDF) of the transversely polarized proton $p^\uparrow$ as the intrinsic twist-3 $g_T(x)$ distribution. We further argue that the complete polarized cross section also contains contributions from the kinematical and the dynamical twist-3 PDFs, in addition to the intrinsic twist-3 PDF. By restricting to the Wandzura-Wilczek approximation, where the dynamical twist-3 PDFs are dropped, we find that the odderon contribution to the polarized cross section for inclusive hadron production is exactly zero at the next-to-leading order in the strong coupling.
