STI Publications - View Publication Form #16740
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Publication Information
| Title | Towards High-Precision Parton Distributions From Lattice QCD via Distillation | ||||
| Abstract | We apply the Distillation spatial smearing program to the extraction of the unpolarized isovector valence PDF of the nucleon. The improved volume sampling and control of excited-states afforded by distillation leads to a dramatically improved determination of the requisite Ioffe-time Pseudo-distribution (pITD). The impact of higher-twist effects is subsequently explored by extending the Wilson line length present in our non-local operators to one half the spatial extent of the lattice ensemble considered. The valence PDF is extracted by analyzing both the matched Ioffe-time Distribution (ITD), as well as a direct matching of the pITD to the PDF. Through development of a novel prescription to obtain the PDF from the pITD we establish a concerning deviation of the pITD from the expected DGLAP evolution of the pseudo-PDF. The presence of DGLAP evolution is observed once more following introduction of a discretization term into the PDF extractions. Observance and correction of this discrep | ||||
| Author(s) | Colin Egerer, Robert Edwards, Christos Kallidonis, Konstantinos Orginos, Anatoly Radyushkin, David Richards, Eloy Romero Alcalde, Savvas Zafeiropoulos  |
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| Publication Date | November 2021 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Journal of High Energy Physics |
| Refereed | Yes |
| Volume | 11 |
| Issue | |
| Page(s) | 148 |
Attachments/Datasets/DOI Link
| Document(s) |
JHEP11-148_2021.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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