STI Publications - View Publication Form #15036
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Publication Information
| Title | First lattice QCD study of the gluonic structure of light nuclei | ||||
| Abstract | The role of gluons in the structure of the nucleon and light nuclei is investigated using lattice quantum chromodynamics (QCD) calculations. The first moment of the unpolarised gluon distribution is studied in nuclei up to atomic number $A=3$ at quark masses corresponding to pion masses of $m_\pi\sim 450$ and $806$ MeV. Nuclear modification of this quantity defines a gluonic analogue of the EMC effect and is constrained to be less than $\sim 10$\% in these nuclei. This is consistent with expectations from phenomenological quark distributions and the momentum sum rule. In the deuteron, the combination of gluon distributions corresponding to the $b_1$ structure function is found to have a small first moment compared with the corresponding momentum fraction. The first moment of the gluon transversity structure function is also investigated in the spin-1 deuteron, where a non-zero signal is observed at $m_\pi \sim 806$ MeV. This is the first indication of gluon contributions to nucl | ||||
| Author(s) | Phiala Shanahan, William Detmold, Arjun Gambhir, Konstantinos Orginos, Martin Savage, Frank Winter, Michael Wagman | ||||
| Publication Date | November 2017 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Colonial Williamsburg Foundation, Williamsburg, VA | ||||
| 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 D |
| Refereed | No |
| Volume | 96 |
| Issue | |
| Page(s) | 094512 |
Attachments/Datasets/DOI Link
| Document(s) |
nuclear_gluon.pdf
(STI Document)
JLAB-THY-17-2540.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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