Publications
Publication Information
| Title | Confronting lattice parton distributions with global QCD analysis |
| Authors | Jacob Bringewatt, Nobuo Sato, Wolodymyr Melnitchouk, Jianwei Qiu, Fernanda Steffens, Martha Constantinou |
| JLAB number | JLAB-THY-20-3257 |
| LANL number | arXiv:2010.00548 |
| Other number | DOE/OR/23177-5048 |
| 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 103 Page(s) 016003 Refereed | |
| Publication Abstract: | We present the first Monte Carlo based global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs) that includes nucleon isovector matrix elements in coordinate space from lattice QCD. We investigate the degree of universality of the extracted PDFs when the lattice and experimental data are treated under the same conditions within the Bayesian likelihood analysis. For the unpolarized sector, we find rather weak constraints from the current lattice data on the phenomenological PDFs, and difficulties in describing the lattice matrix elements at large spatial distances. In contrast, for the polarized PDFs we find good agreement between experiment and lattice data, with the latter providing significant constraints on the spin-dependent isovector quark and antiquark distributions. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.103.016003 |
| Accepted Manuscript: | PhysRevD.103.016003.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |