Extraction of the Compton form factor H from deeply virtual Compton scattering measurements at Jefferson Lab

被引：42
|
作者：
Moutarde, H. [1 ]
机构：
[1] CEA, Ctr Saclay, IRFU, Serv Phys Nucl, F-91191 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW D | 2009年 / 79卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.79.094021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the framework of generalized parton distributions, we study the helicity-dependent and independent cross sections measured in Hall A and the beam spin asymmetries measured in Hall B at Jefferson Laboratory. We perform a global fit of these data and fits on each kinematic bin. We extract the real and imaginary parts of the Compton form factor H under the main hypothesis of dominance of the generalized parton distribution H and twist 2 accuracy. We discuss our results and compare to previous extractions as well as to the VGG model. We pay extra attention to the estimation of errors on the extraction of H.
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页数：14
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