Longitudinal-transverse separation of the deuterium (e,e’p) response functions

In the four-momentum-transfer range 0.05{le}{ital q}{sub {nu}}{sup 2}{le}0.27 (GeV/{ital c}){sup 2}, longitudinal and transverse response functions have been determined by performing a Rosenbluth separation of {sup 2}H({ital e},{ital e}{prime}{ital p}) coincidence cross sections measured in parallel kinematics. The results are compared to nonrelativistic calculations that include the effects of final-state interaction, meson-exchange currents, and isobar configurations, and to relativistic calculations that include the effects of final-state interaction. The ratios of the response functions agree with both calculations; the absolute values are (16{plus minus}3{plus minus}8)% larger than predicted.