STI Publications - View Publication Form #17421
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Publication Information
| Title | Tomography of pions and protons via transverse momentum dependent distributions | ||||
| Abstract | We perform the first simultaneous extraction of parton collinear and transverse degrees of freedom from low-energy fixed-target Drell-Yan data in order to compare the transverse momentum dependent (TMD) parton distribution functions (PDFs) of the pion and proton. We demonstrate that the transverse separation of the quark field encoded in TMDs of the pion is more than $5 \sigma$ smaller than that of the proton. Additionally, we find the transverse separation of the quark field decreases as the longitudinal momentum fraction decreases. In studying the nuclear modification of TMDs, we observe that it is similar to that found in collinear distributions. We comment on possible explanations for these intriguing behaviors, which call for a deeper examination of tomography in a variety of strongly interacting quark-gluon systems. | ||||
| Author(s) | Patrick Barry, Leonard Gamberg, Wally Melnitchouk, Eric Moffat, Daniel Pitonyak, Alexei Prokudin, Nobuo Sato | ||||
| Publication Date | November 2023 | ||||
| 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), National Science Foundation | ||||
| 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 | Physical Review D |
| Refereed | No |
| Volume | 108 |
| Issue | |
| Page(s) | L091504 |
Attachments/Datasets/DOI Link
| Document(s) |
PhysRevD.108.L091504.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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