论文标题
QCD分析大光子虚拟的近阈值Quarkonium leptodulation
A QCD analysis of near-threshold quarkonium leptoproduction at large photon virtualities
论文作者
论文摘要
我们提出了一种新颖的方法，以根据操作员的产品扩展，计算近阈值$ j/ψ$的横截面和$υ$生产。我们表明，该过程可用于提取质子的D端重力形式的Gluon部分。在转标水平上，它对QCD的痕量异常效应也很敏感。
We propose a novel approach to compute the cross section of near-threshold $J/ψ$ and $Υ$ production in electron-proton scattering at large photon virtualities $Q^2$ based on an operator product expansion. We show that the process can be used to extract the gluon part of the D-term gravitational form factor of the proton. At the subleading level, it is also sensitive to the trace anomaly effect of QCD.
