论文标题
横向单个自旋不对称$ a_ {ut}^{\ sin（ϕ_h-ϕ_s）} $用于SIDIS中的单个强子生产
Transverse single spin asymmetry $A_{UT}^{\sin(ϕ_h-ϕ_S)}$ for single hadron production in SIDIS
论文作者
论文摘要
在本文中，我们研究了单个旋转不对称$ a_ {ut}^{\ sin（ϕ_h-ϕ_s）} $在半含量的深度无弹性散射（SIDIS）中，在横向动量（TMD）依赖性（TMD）依赖性（TMD）中的单一强体产量（sidis）中，直到下一步为leagarithmic（nlle）序列（nlle）顺序。不对称性是由Sivers功能的卷积和非偏振片段化函数造成的。具体而言，坐标空间和扰动区域中的Sivers函数可以表示为$ c $ - 系数的卷积和相应的共线相关函数，其中QIU-STERMAN函数是最相关的函数。我们对爱马仕和指南针测量的运动学对辅助的不对称性进行了详细的现象学分析。发现获得的$ x_b $ - ，$ z_h $ - 和$ p_ {h \ perp} $ - 依赖性不对称基本上与爱马仕和指南针的测量基本一致。
In this paper we study the single spin asymmetry $A_{UT}^{\sin(ϕ_h-ϕ_S)}$ of a single hadron production in semi-inclusive deep inelastic scattering (SIDIS) within the framework of transverse momentum dependent (TMD) factorization up to next-to-leading logarithmic (NLL) order of QCD. The asymmetry is contributed by the convolution of the Sivers function and the unpolarized fragmentation function. Specifically, the Sivers function in the coordinate space and perturbative region can be represented as the convolution of the $C$-coefficients and the corresponding collinear correlation functions, among which the Qiu-Sterman function is the most relevant one. We perform a detailed phenomenological analysis of the Sivers asymmetry at the kinematics of the HERMES and the COMPASS measurements. It is found that the obtained $x_B$-, $z_h$- and $P_{h\perp}$-dependent asymmetries are basically consistent with the HERMES and the COMPASS measurements.
