Publications
Publication Information
| Title | Complementarity of experimental and lattice QCD data on pion parton distributions |
| Authors | Patrick Barry, Colin Egerer, Joseph Karpie, Wolodymyr Melnitchouk, Christopher Monahan, Konstantinos Orginos, Jianwei Qiu, David Richards, Nobuo Sato, Raza Sufian, S. Zafeiropoulos |
| JLAB number | JLAB-THY-22-3592 |
| LANL number | arXiv:2204.00543 |
| Other number | DOE/OR/23177-5463 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 105 Page(s) 114051 Refereed | |
| Publication Abstract: | We extract pion parton distribution functions (PDFs) in a Monte Carlo global QCD analysis of experimental data together with reduced Ioffe time pseudo-distributions and matrix elements of current-current correlators generated from lattice QCD. By including both experimental and lattice QCD data, our analysis rigorously quantifies both the uncertainties of the pion PDFs and systematic effects intrinsic to the lattice QCD observables. The reduced Ioffe time pseudo-distributions significantly decrease the uncertainties on the PDFs, while the current-current correlators are limited by the systematic effects associated with the lattice. Consistent with recent phenomenological determinations, the behavior of the valence quark distribution of the pion at large momentum fraction is found to be $\sim (1-x)^{ \beta_{\rm eff}}$ with $\beta_{\rm eff} \approx 1.0-1.2$. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.105.114051 |
| Accepted Manuscript: | PhysRevD.105.114051.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |