Electromagnetic structure of the trinucleons

Marcucci, L E; Riska, D O; Schiavilla, R

doi:10.1103/PhysRevC.58.3069

Electromagnetic structure of the trinucleons

Journal Article · Fri May 01 04:00:00 EDT 1998 · Phys.Rev. C58 (1998) 3069-3084

DOI:https://doi.org/10.1103/PhysRevC.58.3069· OSTI ID:755937

Marcucci, L E; Riska, D O; Schiavilla, R

The electromagnetic form factors of the trinucleons {sup 3}H and {sup 3}He are calculated with wave functions obtained with the Argonne AV18 two-nucleon and Urbana IX three-nucleon interactions. Full account is taken of the two-body currents required by current conservation with the AV18 interaction as well as those associated with N-Delta transition currents and the currents of Delta resonance components in the wave functions. Explicit three-nucleon current operators associated with the two-pion exchange three-nucleon interaction arising from irreducible S-wave pion-nucleon scattering is constructed and shown to have very little effect on the calculated magnetic form factors. The calculated magnetic form factor of {sup 3}H, and charge form factors of both {sup 3}H and {sup 3}He are in satisfactory agreement with the experimental data. However, the position of the zero in the magnetic form factor of {sup 3}He is slightly underpredicted.

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Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)

Sponsoring Organization:: USDOE Office of Energy Research (ER) (US)

DOE Contract Number:: AC05-84ER40150

OSTI ID:: 755937

Report Number(s):: DOE/ER/40150-1505; JLAB-THY-98-21; nucl-th/9805048

Journal Information:: Phys.Rev. C58 (1998) 3069-3084, Journal Name: Phys.Rev. C58 (1998) 3069-3084

Country of Publication:: United States

Language:: English

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