Search for evidence of two-photon contribution in elastic electron-proton data

被引：44
|
作者：
Tomasi-Gustafsson, E [1 ]
Gakh, GI
机构：
[1] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France
[2] Kharkov Phys Tech Inst, NSC, UA-61108 Kharkov, Ukraine
来源：
PHYSICAL REVIEW C | 2005年 / 72卷 / 01期
关键词：
D O I：
10.1103/PhysRevC.72.015209
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：
We reanalyze the most recent data on elastic electron-proton scattering. We look for deviation from linearity of the Rosenbluth fit to the differential cross section, which would be the signature of the presence of two-photon exchange. The two-photon contribution is parametrized by a one-parameter formula, based on symmetry arguments. The present data do not show evidence for such deviation.
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页数：6
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