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arXiv 0905.1220hep-ph
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HERMES深虚康普顿散射的广义部分子分布

Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES

M. Guidal, H. Moutarde

摘要:

HERMES合作最近发表了一组(相关)束电荷,束自旋和目标自旋相对不对称的深度虚拟康普顿散射过程。这个反应原则上允许得到核子的广义部分子分布。我们已经安装,在QCD领导秩序和领导扭曲手袋近似,但在一个模型独立的方式,这组数据,我们报告我们的结果提取康普顿形状因子。特别地,我们能够提取对$H$ GPD的约束。

英文摘要:

The HERMES collaboration has recently published a set of (correlated) beam charge, beam spin and target spin relative asymmetries for the Deeply Virtual Compton Scattering process. This reaction allows in principle to access the Generalized Parton Distributions of the nucleon. We have fitted, in the QCD leading-order and leading-twist handbag approximation, but in a model independent way, this set of data and we report our results for the extracted Compton Form Factors. In particular, we are able to extract constrains on the $H$ GPD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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