Dispersion-theoretical analysis of the nucleon electromagnetic form factors

被引：428

作者：

Mergell, P ^{[1
]}

Meissner, UG ^{[1
]}

Drechsel, D ^{[1
]}

机构：

[1] UNIV BONN,INST THEORET KERNPHYS,D-53115 BONN,GERMANY

来源：

NUCLEAR PHYSICS A | 1996年 / 596卷 / 3-4期

关键词：

D O I：

10.1016/0375-9474(95)00339-8

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：

Dispersion relations allow for a coherent description of the nucleon electromagnetic form factors measured over a large range of momentum transfer, Q(2) similar or equal to 0-35 GeV2. Including constraints from unitarity and perturbative QCD, we present a novel parametrisation of the absorptive parts of the various isoscalar and isovector nucleon form factors. Using the current world data, we obtain results for the electromagnetic form factors, nucleon radii and meson couplings. We stress the importance of measurements at large momentum transfer to test the predictions of perturbative QCD.

引用

页码：367 / 396

页数：30

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