The electromagnetic form factors of the trinucleons ³H and ³He are calculated with wave functions obtained with the Argonne v₁₈ two-nucleon and Urbana IX three-nucleon interactions. Full account is taken of the two-body currents required by current conservation with the v₁₈ interaction as well as those associated with NΔ transition currents and the currents of {Δ} 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 are constructed and shown to have very little effect on the calculated magnetic form factors. The calculated magnetic form factor of ³H, and charge form factors of both ³H and ³He are in satisfactory agreement with the experimental data. However, the position of the zero in the magnetic form factor of ³He is slightly underpredicted.
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Marcucci et al. (1998) studied this question.
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