Renormalons in exclusive meson electroproduction

被引：0
|
作者：
Belitsky, A [1 ]
机构：
[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
来源：
INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS | 2003年 / 698卷
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D O I：
暂无
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 discuss the possibility of measuring generalized parton distributions in exclusive electro-production of mesons off the nucleon and estimate the uncertainty from perturbatively induced higher-twist corrections. We find that, while the magnitude of the cross section changes significantly taking into account twist-four contributions modeled via renormalons, the transverse spin asymmetry is weakly sensitive to them and displays the precocious scaling.
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页码：607 / 611
页数：5
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