Magnetic moments of light nuclei from lattice quantum chromodynamics
- Univ. of Washington, Seattle, WA (United States)
- Univ. of Washington, Seattle, WA (United States); Institute for Nuclear Theory, Seattle, WA (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Univ. de Barcelona (Spain)
- The City College of New York, New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- NPLQCD Collaboration
- Grant/Contract Number:
- PHY1206498; PHY1205778; OCI-1053575; FG02-00ER41132; SC0010495; FG02-04ER41302; AC05-06OR23177; FG02-97ER4014; AC02-05CH11231
- OSTI ID:
- 1165539
- Alternate ID(s):
- OSTI ID: 1180812
- Report Number(s):
- JLAB-THY-14-1951; arXiv:1409.3556; DOE/OR/23177-3178; PRLTAO; ArticleNumber: 252001
- Journal Information:
- Physical Review Letters, Vol. 113, Issue 25; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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