Speaker
Description
Pion parton distribution functions (PDFs) have a long standing debate in QCD regarding the behavior of the valence quark PDF as the momentum fraction, $x$, approaches 1. Recently the Jefferson Lab Angular Momentum (JAM) collaboration has included both the historical fixed-target Drell-Yan (DY) data and the leading neutron (LN) electroproduction data from HERA in a simultaneous global QCD analysis. Both datasets together allows us to study the pion PDFs across a wide range of momentum fraction. Addressing the large-$x$ behavior, we have also introduced a systematic study of threshold resummation in the DY hard coefficients as well as the inclusion of reduced Ioffe time pseudo-distributions calculated from lattice data. In this talk, I explore these topics as well as potential impacts on pion PDFs from future facilities.
| speaker affiliation | Jefferson Lab |
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