Baryon magnetic moments: Symmetries and relations
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epjconf_lattice2018_06001.pdf
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Author(s)
Parreño, Assumpta
Savage, Martin J.
Tiburzi, Brian C.
Wilhelm, Jonas
Chang, Emmanuel
Detmold, William
Orginos, Kostas
Date Issued
March 2018
Journal
EPJ Web of Conferences
Publisher
EDP Sciences
Citation
Parreño, Assumpta et al. “Baryon Magnetic Moments: Symmetries and Relations.” Edited by M. Della Morte, P. Fritzsch, E. Gámiz Sánchez, and C. Pena Ruano. EPJ Web of Conferences 175 (2018): 06001 © 2018 The Authors
Version
Final published version
Abstract
Magnetic moments of the octet baryons are computed using lattice QCD in background magnetic fields, including the first treatment of the magnetically coupled ∑ 0-^ system. Although the computations are performed for relatively large values of the up and down quark masses, we gain new insight into the symmetries and relations between magnetic moments by working at a three-flavor mass-symmetric point. While the spinflavor symmetry in the large Nc limit of QCD is shared by the naïve constituent quark model, we find instances where quark model predictions are considerably favored over those emerging in the large Nc limit. We suggest further calculations that would shed light on the curious patterns of baryon magnetic moments.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1051/EPJCONF/201817506001
