skip to main content

This content will become publicly available on December 16, 2015

Title: Magnetic moments of light nuclei from lattice quantum chromodynamics

We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton and 3He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to mπ ~ 800 MeV, reveal that the structure of these nuclei at unphysically heavy quark masses closely resembles that at the physical quark masses. We find that the magnetic moment of 3He differs only slightly from that of a free neutron, as is the case in nature, indicating that the shell-model configuration of two spin-paired protons and a valence neutron captures its dominant structure. Similarly a shell-model-like moment is found for the triton, μ3H ~ μp. The deuteron magnetic moment is found to be equal to the nucleon isoscalar moment within the uncertainties of the calculations.
 [1] ;  [2] ;  [2] ;  [3] ;  [1] ;  [4] ;  [5] ;  [2] ;  [6]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Univ. of Washington, Seattle, WA (United States); Institute for Nuclear Theory, Seattle, WA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  5. Univ. de Barcelona (Spain)
  6. The City College of New York, New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-14-1951; arXiv:1409.3556; DOE/OR/23177-3178
Journal ID: ISSN 0031-9007; PRLTAO; ArticleNumber: 252001
Grant/Contract Number:
PHY1206498; PHY1205778; OCI-1053575; FG02-00ER41132; SC0010495; FG02-04ER41302; AC05-06OR23177; FG02-97ER4014; AC02-05CH11231
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 113; Journal Issue: 25; Journal ID: ISSN 0031-9007
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Orgs:
NPLQCD Collaboration
Country of Publication:
United States