论文标题

NLO偶极子分解的大量夸克:横向光子

Massive quarks in NLO dipole factorization for DIS: Transverse photon

论文作者

Beuf, G., Lappi, T., Paatelainen, R.

论文摘要

我们计算QCD Fock组件的光锥波函数在QCD耦合(包括夸克质量)中近代领先顺序所需的横向虚拟光子中计算。我们提供了Quark-Antiquark Fock组件的一个环波函数和Quark-Antiquark-Gluon Fock组件的树级波函数的详细计算。夸克质量在极质量方案中重新归一化,从洛伦兹不变性的需求中获得了限制。特别是,从NLO处的Quark Pauli形式从Quark-Antiquark Fock组件的壳限制中恢复。我们利用结果来计算偶极分解框架中密集目标上的高能深度弹性散射(DIS)横向结构函数。加上我们对纵向光子的较早结果,这完成了偶极图片中总深度非弹性散射横截面的计算,并在近距离领先的顺序下进行了巨大的夸克,从而与实验数据进行了比较。

We calculate the light cone wave functions for the QCD Fock components in a transverse virtual photon necessary for applications at next-to-leading order in the QCD coupling, including quark masses. We present a detailed calculation of both the one loop wave function for the quark-antiquark Fock component and the tree level wave function for the quark-antiquark-gluon Fock component. The quark masses are renormalized in the pole mass scheme, satisfying constraints from the requirement of Lorentz invariance. In particular the quark Pauli form factor at NLO is recovered from the on-shell limit of the quark-antiquark Fock component. We use our result to calculate the next-to-leading order correction to the high energy deep inelastic scattering (DIS) transverse structure function on a dense target in the dipole factorization framework. Together with our earlier result for longitudinal photons, this completes the calculation of the total deep inelastic scattering cross section in the dipole picture with massive quarks at next-to-leading order, enabling a comparison with experimental data.

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