How to reconcile the Rosenbluth and the polarization transfer methods in the measurement of the proton form factors

被引：309
|
作者：
Guichon, PAM [1 ]
Vanderhaeghen, M
机构：
[1] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France
[2] Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.91.142303
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The apparent discrepancy between the Rosenbluth and the polarization transfer methods for the ratio of the electric to magnetic proton form factors can be explained by a two-photon exchange correction which does not destroy the linearity of the Rosenbluth plot. Though intrinsically small, of the order of a few percent of the cross section, this correction is accidentally amplified in the case of the Rosenbluth method.
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页数：4
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