STI Publications - View Publication Form #16933
| Back to Search Results |
Publication Information
| Title | Polarized Antimatter in the Proton from Global QCD Analysis | ||||
| Abstract | We present a global QCD analysis of spin-dependent parton distribution functions (PDFs) that includes the latest polarized $W$-lepton production data from the STAR collaboration at RHIC. These data allow the first data-driven extraction of a nonzero polarized light quark sea asymmetry $\Delta \bar{u} - \Delta \bar{d}$ within a global QCD framework with minimal theoretical assumptions. Within our simultaneous extraction of polarized PDFs, unpolarized PDFs, and pion and kaon fragmentation functions, we also extract a self-consistent set of antiquark polarization ratios $\Delta \bar{u}/\bar{u}$ and $\Delta \bar{d}/\bar{d}$. | ||||
| Author(s) | Christopher Cocuzza, Wally Melnitchouk, Andreas Metz, Nobuo Sato | ||||
| Publication Date | August 2022 | ||||
| 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 |
|
||||
| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 106 |
| Issue | |
| Page(s) | L031502 |
Attachments/Datasets/DOI Link
| Document(s) |
STAR.pdf
(STI Document)
PhysRevD.106.L031502.pdf
(Accepted Manuscript)
|
| DOI Link | |
| Dataset(s) | (none) |
| Back to Search Results |