We present the first calculations of the electromagnetic form factors of
3He and 3H within the framework of the Covariant Spectator Theory (CST).
This first exploratory study concentrates on the sensitivity of the form
factors to the strength of the scalar meson-nucleon off-shell coupling, known
from previous studies to have a strong influence on the three-body binding
energy. Results presented here were obtained using the complete impulse
approximation (CIA), which includes contributions of relativistic origin that
appear as two-body corrections in a non-relativistic framework, such as
"Z-graphs", but omits other two and three-body currents. We compare our results
to non-relativistic calculations augmented by relativistic corrections of
O(v/c)2.Comment: 30 pages, 13 figures, 6 table