Progress in computing parton distribution functions from the quasi-PDF approach
Progress in computing parton distribution functions from the quasi-PDF approach
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DOI：
10.1051/epjconf/201817506021
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发表时间：
2017-09
期刊：
影响因子：
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通讯作者：
C. Alexandrou;K. Cichy;M. Constantinou;K. Hadjiyiannakou;K. Jansen;H. Panagopoulos;Aurora Scapellato;F. Steffens
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文献类型：
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作者：
C. Alexandrou;K. Cichy;M. Constantinou;K. Hadjiyiannakou;K. Jansen;H. Panagopoulos;Aurora Scapellato;F. Steffens
我们讨论了欧洲扭曲质量协作组织在从准pdf方法提取部分分布函数方面的最新进展。我们专注于我们最近开发的非微扰重整化处方，使用RI方案。我们给出了计算准pdf所需的矩阵元素的重整化函数的结果，包括到MS格式的转换，以及重整化矩阵元素的结果。我们讨论了Z因子中存在的系统效应以及未来解决它们的可能方法。
We discuss the current developments by the European Twisted Mass Collaboration in extracting parton distribution functions from the quasi-PDF approach. We concentrate on the non-perturbative renormalization prescription recently developed by us, using the RI′ scheme. We show results for the renormalization functions of matrix elements needed for the computation of quasi-PDFs, including the conversion to the MS scheme, and for renormalized matrix elements. We discuss the systematic effects present in the Z -factors and the possible ways of addressing them in the future.