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Title: Baryon magnetic moments: Symmetries and relations

Abstract

Magnetic moments of the octet baryons are computed using lattice QCD in background magnetic fields, including the first treatment of the magnetically coupled Σ0- Λ 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.

Authors:
 [1];  [2];  [3];  [4];  [2];  [5]; ORCiD logo [6]
  1. University of Barcelona
  2. Univ. of Washington, Seattle, WA (United States)
  3. City College of New York, NY (United States); City Univ. (CUNY), NY (United States)
  4. Justus-Liebig-Universitat Giessen, Giessen, Germany; Univ. of Washington, Seattle, WA (United States)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1433811
Report Number(s):
JLAB-THY-17-2569; DOE/OR/23177-4229; arXiv:1709.01564
Journal ID: ISSN 2100-014X
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Journal Name:
EPJ Web of Conferences
Additional Journal Information:
Journal Volume: 175; Journal Issue: none; Conference: 35th International Symposium on Lattice Field Theory (Lattice 2017), 18-24 Jun 2017. Granada, Spain; Journal ID: ISSN 2100-014X
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English

Citation Formats

Parreno, Assumpta, Savage, Martin, Tiburzi, Brian, Wilhelm, Jonas, Chang, Emmanuel, Detmold, William, and Orginos, Kostas. Baryon magnetic moments: Symmetries and relations. United States: N. p., 2018. Web. doi:10.1051/epjconf/201817506001.
Parreno, Assumpta, Savage, Martin, Tiburzi, Brian, Wilhelm, Jonas, Chang, Emmanuel, Detmold, William, & Orginos, Kostas. Baryon magnetic moments: Symmetries and relations. United States. doi:10.1051/epjconf/201817506001.
Parreno, Assumpta, Savage, Martin, Tiburzi, Brian, Wilhelm, Jonas, Chang, Emmanuel, Detmold, William, and Orginos, Kostas. Sun . "Baryon magnetic moments: Symmetries and relations". United States. doi:10.1051/epjconf/201817506001. https://www.osti.gov/servlets/purl/1433811.
@article{osti_1433811,
title = {Baryon magnetic moments: Symmetries and relations},
author = {Parreno, Assumpta and Savage, Martin and Tiburzi, Brian and Wilhelm, Jonas and Chang, Emmanuel and Detmold, William and Orginos, Kostas},
abstractNote = {Magnetic moments of the octet baryons are computed using lattice QCD in background magnetic fields, including the first treatment of the magnetically coupled Σ0- Λ 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.},
doi = {10.1051/epjconf/201817506001},
journal = {EPJ Web of Conferences},
issn = {2100-014X},
number = none,
volume = 175,
place = {United States},
year = {2018},
month = {4}
}

Conference:
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