https://doi.org/10.1051/epjconf/201817506021
Progress in computing parton distribution functions from the quasi-PDF approach
1
Department of Physics, University of Cyprus, POB 20537, 1678 Nicosia, Cyprus
2
The Cyprus Institute, 20 Kavafi Str., Nicosia 2121, Cyprus
3
Goethe-Universität Frankfurt am Main, Institut für Theoretische Physik, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
4
Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
5
Department of Physics, Temple University, Philadelphia, PA 19122 - 1801, USA
6
John von Neumann Institute for Computing (NIC), DESY, Platanenallee 6, 15738 Zeuthen, Germany
7
University of Wuppertal, Gaußstr. 20, 42119 Wuppertal, Germany
* Speaker, e-mail: kcichy@amu.edu.pl
Published online: 26 March 2018
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.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
