论文标题
康普顿振幅和核子结构功能
The Compton amplitude and nucleon structure functions
论文作者
论文摘要
结构函数是理解深度非弹性散射过程的必要对象，从而为Hadron的党派结构提供了宝贵的见解。康普顿振幅的直接计算提供了一种访问结构功能的互补方法，从而规避了标准运营商产品扩展方法的操作员混合和重质化问题。我们描述了康普顿振幅与结构函数之间的联系，并描述了一种直接计算幅度的Feynman-Hellmann方法。作为应用，我们提取横向和纵向质子结构功能的力矩并研究功率校正。
Structure functions are the essential objects for understanding the deep inelastic scattering processes, providing valuable insight into the partonic structure of hadrons. A direct calculation of the Compton amplitude provides a complementary way to accessing the structure functions, circumventing the operator mixing and renormalisation issues of the standard operator product expansion approach. We describe the connection between the Compton amplitude and the structure functions, and describe a Feynman-Hellmann approach to calculate the amplitude directly. As an application, we extract the moments of transverse and longitudinal proton structure functions and study the power corrections.
