Precision Measurements of the Proton Elastic Form Factor Ratio

被引：3
|
作者：
Higinbotham, D. W. [1 ]
机构：
[1] Jefferson Lab, Newport News, VA 23606 USA
来源：
HADRON 2009 | 2010年 / 1257卷
关键词：
Proton Form Factor; SPECTROMETER; FACILITY;
D O I：
10.1063/1.3483410
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
New high precision polarization measurements of the proton elastic form factor ratio in the Q(2) range from 0.3 to 0.7 [GeV/c](2) have been made. These elastic H(e,e'p) measurements were done in Jefferson Lab's Hall A using 80% longitudinally polarized electrons and recoil polarimetry. For Q(2) greater than 1 [GeV/c](2), previous polarization data indicated a strong deviation of the form factor ratio from unity which sparked renewed theoretical and experimental interest in how two-photon diagrams have been taken into account. The new high precision data indicate that the deviation from unity, while small, persists even at Q(2) less than 1 [GeV/c](2).
引用
收藏
页码：637 / 640
页数：4
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