Photon Structure Function Revisited

• 作者: Christoph Berger
• 来源期刊: 现代物理(英文)
• 学科: 物理学
• 关键词: STRUCTURE FUNCTIONS PHOTON STRUCTURE Two PHOTON PHYSICS QCD QCD Coupling CONSTANT
• 年，卷（期）: xdwlyw_2015,（8）
• 页码范围: 1023-1043
• 页数: 21页
• 分类号: O57

摘要

The flux of papers from electron positron colliders containing data on the photon structure function ended naturally around 2005. It is thus timely to review the theoretical basis and confront the predictions with a summary of the experimental results. The discussion will focus on the increase of the structure function with x (for x away from the boundaries) and its rise with , both characteristics being dramatically different from hadronic structure functions. The agreement of the experimental observations with the theoretical calculations is a striking success of QCD. It also allows a new determination of the QCD coupling constant which very well corresponds to the values quoted in the literature.