Magnetic form factors of the trinucleons

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.2294· OSTI ID:5091339

Schiavilla, R ^[1]; Pandharipande, V R ^[2]; Riska, D O ^[3]

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1. Continuous Electron Beam Accelerator Facility, Newport News, Virginia 23606 (USA)
2. Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (USA)
3. Department of Physics, University of Helsinki, 00170 Helsinki, Finland (FI)

The magnetic form factors of {sup 3}H and {sup 3}He are calculated with the Monte Carlo method from variational ground-state wave functions obtained for the Argonne and Urbana two- and three-nucleon interactions. The electromagnetic current operator contains one- and two-body terms that are constructed so as to satisfy the continuity equation with the two-nucleon potential in the Hamiltonian. The results obtained with the Argonne two-nucleon interaction are in overall agreement with the empirical values. It appears that the remaining theoretical uncertainty, in the calculation of these form factors from a given interaction model, is dominated by that in the electromagnetic form factors of the nucleon. It is found that the isovector magnetic form factors are rather sensitive to the details of the isospin-dependent tensor force, and they are much better reproduced with the Argonne than the Urbana potential. The isoscalar magnetic form factors appear to be sensitive to the spin-orbit interactions, and are better reproduced with the Urbana potential. The Argonne potential has a stronger {tau}{sub 1}{center dot}{tau}{sub 2} tensor force, while the Urbana one has a shorter-range spin-orbit interaction.

• OSTI ID: 5091339
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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