深度虚康普顿散射振幅的次领头阶QCD分析
高能物理 - 唯象学
2009-11-07 v3
摘要
我们提出了在方案下,针对两种不同输入情景,对非极化和极化深度虚康普顿散射(DVCS)振幅进行次领头阶(NLO)QCD分析。我们说明并讨论了NLO效应的大小以及振幅在斜度和光子虚度下的行为。在非极化情况下,在固定时,我们发现振幅在上表现出显著的等效幂律行为,类似于Regge因子化,跨越的多个数量级。我们还量化了DVCS振幅实部与虚部的比值及其对因子化标度变化的敏感性。
引用
@article{arxiv.hep-ph/0106319,
title = {A next-to-leading order QCD analysis of deeply virtual Compton scattering amplitudes},
author = {A. Freund and M. F. McDermott},
journal= {arXiv preprint arXiv:hep-ph/0106319},
year = {2009}
}
备注
12 pages, 12 figures, revtex, final version to be published in Phys. Rev. D. Corrected error in MRSA' distribution and modified extraplation behavior of GRSV00 distribution. Corrected error in +i\epsilon treatment. Taking now correct sheaf of log. Errors in subtraction equations corrected. Figures and results for affected imaginary part of NLO amplitude changed accordingly