QCD真空凝聚效应对R比值的非微扰修正

Non-Pertubative Correction to R=σ_L/σ_T Due to the Effect of the QCD Vacuum Condensates

本文讨论了QCD真空凝聚效应对强子结构函数中R比值(R≡σ_L/σ_1)的影响。利用背景场的基本思想,本文从有效拉氐量出发,计算了夸克凝聚对R比值的非微扰修正(Q^(-2)项)。结果显示本文所给出的修正在小x区较敏感。

The effects of QCD vacuum condensate on hardron structure function are considered Based on the background field theory, starting from the effective lagrangian of QCD we cal- culate the non-perturbative correction to ratio R=σ_L/σ_T of the hardron structure function Our corrections are sensitive at small x regions.