论文标题
超出领先能力以外的横向动量依赖分布的计算
Calculation of transverse momentum dependent distributions beyond the leading power
论文作者
论文摘要
我们计算了Twist-2和Twist-3 Parton分配功能对$ B $所有功率的横向动量依赖（TMD）分布的小$ B $扩展的贡献。该计算是通过基于所有八个夸克TMD分布的旋转形式主义的扭曲分解方法完成的。新计算的术语伴随着prefactor $（m^2b^2）^n $，并代表重新定义的横截面的目标质量校正。首次得出了椒盐脆度分布的非平凡表达。
We compute the contribution of twist-2 and twist-3 parton distribution functions to the small-$b$ expansion for transverse momentum dependent (TMD) distributions at all powers of $b$. The computation is done by the twist-decomposition method based on the spinor formalism for all eight quark TMD distributions. The newly computed terms are accompanied by the prefactor $(M^2b^2)^n$ and represent the target-mass corrections to the resummed cross-section. For the first time, a non-trivial expression for the pretzelosity distribution is derived.
