STI Publications - View Publication Form #16844
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Publication Information
| Title | Octet and decuplet baryon sigma-terms and mass decompositions | ||||
| Abstract | We present a comprehensive analysis of the SU(3) octet and decuplet baryon masses and $\sigma$-terms using high-precision lattice QCD data and chiral SU(3) effective theory with finite range regularization. The effects of various systematic uncertainties, including from the scale setting of the lattice data and the regularization prescriptions, are quantified. We find the pion-nucleon and strange nucleon $\sigma$-terms to be $\sigma_{\pi N} = 44(3)(3)$~MeV and $\sigma_{N s} = 50(6)(1)$~MeV, respectively. The results provide constraints on the energy-momentum tensor mass decompositions of the SU(3) octet and decuplet baryons, where we find the trace anomaly and quark/gluon energies decrease for strange baryons due to their larger strange $\sigma$-terms. | ||||
| Author(s) | P. Copeland, Chueng JI, Wally Melnitchouk | ||||
| Publication Date | May 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) | ||||
| 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 Letters |
| Refereed | Yes |
| Volume | 107 |
| Issue | |
| Page(s) | 094041 |
Attachments/Datasets/DOI Link
| Document(s) |
sigma-terms.pdf
(STI Document)
2112.03198.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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