Publications
Publication Information
Title | Flavor symmetry breaking in the $\Delta$ sea |
Authors | Jacob Ethier, Wolodymyr Melnitchouk, Fernanda Steffens, Anthony Thomas |
JLAB number | JLAB-THY-18-2806 |
LANL number | arXiv:1809.06885 |
Other number | DOE/OR/23177-4542 |
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 100 Page(s) 034014 Refereed | |
Publication Abstract: | The discovery of a sizeable asymmetry in the $\bar u$ and $\bar d$ distributions in the proton was one of the more consequential experimental findings in hadron physics last century. Although widely believed to be related to the fundamental role of chiral symmetry in QCD, a definitive verification of this hypothesis has remained elusive. We propose a novel test of the role of chiral symmetry in generating the sea flavor asymmetry by comparing the $\bar d-\bar u$ content in the proton with that in the $\Delta^+$ baryon, where a significant enhancement is expected around the opening of the $N \pi$ decay channel. Recent developments in lattice QCD suggest a promising way to test this prediction in the near future. |
Experiment Numbers: | other |
Group: | THEORY CENTER |
Document: | |
DOI: | https://doi.org/10.1103/PhysRevD.100.034014 |
Accepted Manuscript: | PhysRevD.100.034014.pdf |
Supporting Documents: | |
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