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arXiv 1002.0443hep-phhep-ex
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DVCS振幅中的自旋滤波器

Spin Filter in DVCS amplitudes

Bernard L. G. Bakker, Chueng-Ryong Ji

摘要:

在深虚康普顿散射(DVCS)中,发现在某些运动学中,如果用广泛使用的约化算符计算振幅,角动量是不守恒的。因此,这些运动学将导致错误的分析实验数据的广义部分子分布。与通常的看法相反,在分析DVCS振幅时,纵向偏振虚光子的贡献不应被忽略。

英文摘要:

In deeply virtual Compton scattering (DVCS) it is found that in some kinematics angular momentum is not conserved if the amplitudes are calculated in terms of widely used reduced operators. Consequently, those kinematics will lead to the wrong analysis of experimental data in terms of generalized parton distributions. Contrary to common lore, the contribution of the longitudinally polarized virtual photon should not be neglected in the analysis of DVCS amplitudes.

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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