Transition to Perturbative QCD
Transition to Perturbative QCD
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DOI：
10.1088/1742-6596/299/1/012009
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发表时间：
2011-05
期刊：
影响因子：
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通讯作者：
Ronald Gilman;Ronald Gilman;R. J. Holt;P. Stoler
中科院分区：
文献类型：
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作者：
Ronald Gilman;Ronald Gilman;R. J. Holt;P. Stoler
我们回顾了杰斐逊实验室关于排斥反应中强子和潜在夸克自由度之间的相互作用的计划。程序的大部分最初是基于微扰QCD(PQCD)关于反应截面的标度、螺旋度守恒和形状因子的渐近行为的预测。尽管许多数据没有遵循简单的pQCD预期，但一些可观测数据的规模比预期的要好。一般而言，用非微扰夸克模型最好地理解了潜在的动力学，但弹性重子形状因子提供了一个例子，说明了强子模型成功地实现了高动量转移。
We review the Jefferson Lab program concerning the interplay between hadronic and underlying quark degrees of freedom in exclusive reactions. Much of the program was initially based on predictions from perturbative QCD (pQCD) concerning scaling of reaction cross sections, helicity conservation, and asymptotic behavior of form factors. Although much of the data do not follow simple pQCD expectations, some observables scale better than expected. Generally, the underlying dynamics are best understood with nonperturbative quark models, but the elastic deuteron form factors provide an example of the success of hadronic models to high momentum transfer.