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arXiv 0704.1608hep-ph
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从高扭曲度分析得到的衍射部分子分布

Diffractive parton distributions from the analysis with higher twist

K. Golec-Biernat, A. Luszczak

摘要:

质子的衍射部分子分布确定从HERA衍射数据拟合。除了扭曲2的贡献,扭曲4的贡献,从纵向偏振的虚光子被认为是重要的,在该地区的小衍射质量。本文提出了一种新的纵向衍射结构函数的预测,它与纯扭转分析中得到的结果有很大的不同。

英文摘要:

Diffractive parton distributions of the proton are determined from fits to diffractive data from HERA. In addition to the twist--2 contribution, the twist--4 contribution from longitudinally polarised virtual photons is considered, which is important in the region of small diffractive masses. A new prediction for the longitudinal diffractive structure function is presented which differs significantly from that obtained in the pure twist--2 analyses.

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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