Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA.
Rep Prog Phys. 2012 Aug;75(8):086301. doi: 10.1088/0034-4885/75/8/086301. Epub 2012 Jul 26.
We provide a perspective on studies aimed at observing the transition between hadronic and quark-gluonic descriptions of reactions involving light nuclei. We begin by summarizing the results for relatively simple reactions such as the pion form factor and the neutral pion transition form factor as well as that for the nucleon and end with exclusive photoreactions in our simplest nuclei. A particular focus will be on reactions involving the deuteron. It is noted that a firm understanding of these issues is essential for unravelling important structure information from processes such as deeply virtual Compton scattering as well as deeply virtual meson production. The connection to exotic phenomena such as color transparency will be discussed. A number of outstanding challenges will require new experiments at modern facilities on the horizon as well as further theoretical developments.
我们提供了一种观察涉及轻核反应的强子和夸克-胶子描述之间转变的研究视角。我们首先总结了相对简单反应的结果，例如π介子形状因子和中性π介子跃迁形状因子，以及核子的结果，最后以最简单的原子核中的独占光反应为例。特别关注的是涉及氘的反应。需要注意的是，对于像深度虚拟康普顿散射以及深度虚拟介子产生等过程中，要从中提取重要的结构信息，对这些问题有一个坚定的理解是至关重要的。我们还将讨论与奇特现象（如颜色透明度）的联系。许多突出的挑战需要现代设施中的新实验以及进一步的理论发展。
