Nucleon elastic form factors and local duality

被引：30
|
作者：
Ent, R [1 ]
Keppel, CE
Niculescu, I
机构：
[1] Thomas Jefferson Accelerator Facil, Newport News, VA 23606 USA
[2] Hampton Univ, Hampton, VA 23668 USA
来源：
PHYSICAL REVIEW D | 2000年 / 62卷 / 07期
关键词：
D O I：
10.1103/PhysRevD.62.073008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using a newly obtained sample of inclusive electron-proton scattering data in the nucleon resonance region we have extracted the proton magnetic form factor, utilizing the quark-hadron duality concept. The extraction is in good agreement with direct measurements. Similarly, utilizing quark-hadron duality, a relation can be derived between the ratio of longitudinal to transverse deep inelastic electron-proton scattering cross sections and the ratio of the electric to magnetic proton elastic form factors. Again, the extracted ratio agrees reasonably with the existing world data. This agreement is a first experimental verification of duality in the longitudinal channel, and suggests that effects of higher-twist operators are suppressed on average in both the longitudinal and transverse electron-nucleon scattering processes.
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页码：1 / 5
页数：5
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