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arXiv · 1709.07513

Progress in computing parton distribution functions from the quasi-PDF approach

Constantia Alexandrou·Krzysztof Cichy·Martha Constantinou·Kyriakos Hadjiyiannakou·Karl Jansen·Haralambos Panagopoulos·Aurora Scapellato·Fernanda Steffens
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Abstract

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 $\overline{\rm MS}$ 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.

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Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou, Kyriakos Hadjiyiannakou, Karl Jansen, Haralambos Panagopoulos, Aurora Scapellato, Fernanda Steffens. 2017-09-21. Progress in computing parton distribution functions from the quasi-PDF approach. https://doi.org/10.1051/epjconf/201817506021

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