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arXiv 0906.2464hep-ph
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在HERA的深虚康普顿散射和在CERN的透视

Deeply virtual compton scattering at HERA and perspectives at CERN

Laurent Schoeffel

摘要:

标准的部分子分布函数既不包含部分子之间的关联信息,也不包含部分子的横向运动信息,从而丢失了关于核子三维结构的重要知识。硬排他过程,特别是DVCS,是超越这一标准的必要反应。在下文中,我们检查了来自HERA的最新数据(低$x_{Bj}<10^{-2}$)及其对GPD模型的影响。本文讨论了H1实验测量束流电荷不对称性的最新结果。展望DVCS截面在欧洲核子研究中心,在COMPASS实验的进一步测量。

英文摘要:

Standard parton distribution functions contain neither information on the correlations between partons nor on their transverse motion, then a vital knowledge about the three dimensional structure of the nucleon is lost. Hard exclusive processes, in particular DVCS, are essential reactions to go beyond this standard picture. In the following, we examine the most recent data from HERA (at low $x_{Bj}<10^{-2}$) and their impact on GPD models. The most recent measurements of the Beam Charge Asymmetry by the H1 experiment is discussed. Perspectives are presented for further measurements of DVCS cross sections at CERN, within the COMPASS experiment.

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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