Nucleon form factors: From the space-like to the time-like region

被引：0
|
作者：
Meissner, UG [1 ]
机构：
[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST THEORET KERNPHYS, D-52425 JULICH, GERMANY
来源：
NUCLEAR PHYSICS A | 1997年 / 623卷 / 1-2期
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D O I：
暂无
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：
I discuss how dispersion relations can be used to analyse the nucleon electromagnetic form factors, with particular emphasis on the constraints from unitarity and pQCD. Results for nucleon radii, vector-meson couplings, the onset of pQCD and bounds on the strangeness form factors are presented. The em form factors in the time-like region reveal some interesting physics which is not yet understood in full detail. The need for a better data basis at low, intermediate and large momentum transfer and also in the time-like region is stressed.
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收藏
页码：C340 / C350
页数：11
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