Hadronic form factors and perturbative QCD

被引:67
|
作者
Sterman, G [1 ]
Stoler, P
机构
[1] SUNY Stony Brook, Inst Theoret Phys, Stony Brook, NY 11794 USA
[2] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA
关键词
electron scattering; exclusive process; form factors; hadron wave function;
D O I
10.1146/annurev.nucl.47.1.193
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The electromagnetic form factors of hadrons at large momentum transfer have been the subject of intense theoretical and experimental scrutiny over the past two decades, yet there is still not a universally accepted framework for their description. This review is a synopsis of their current status. The basic theoretical approaches to form factors at large momentum transfer are developed, emphasizing the valence quark and Feynman (soft) pictures. The discussion includes the relation of these descriptions to the parton model, as well as the roles of factorization, evolution, Sudakov resummation and QCD sum rules. This is followed by a discussion of the experimental status of pion and nucleon elastic form factors and resonance production amplitudes in the light of recent data; the successes and shortcomings of various theoretical proposals are highlighted.
引用
收藏
页码:193 / 233
页数:41
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