Relativistic effects and two-body currents in ${}^{2}H(\vec{e},e^{\prime }p)n$ using out-of-plane detection

Abstract

Measurements of the ${}^{2}H(\vec{e},e^{\prime }p)n$ reaction were performed using an 800-MeV polarized electron beam at the MIT-Bates Linear Accelerator and with the out-of-plane magnetic spectrometers (OOPS). The longitudinal-transverse, $f_{LT}$ and $f_{LT}^{\prime }$, and the transverse-transverse, $f_{TT}$, interference responses at a missing momentum of 210 MeV/c were simultaneously extracted in the dip region at Q${}^2$=0.15 (GeV/c)${}^2$. On comparison to models of deuteron electrodisintegration, the data clearly reveal strong effects of relativity and final-state interactions, and the importance of the two-body meson-exchange currents and isobar configurations. We demonstrate that these effects can be disentangled and studied by extracting the interference response functions using the novel out-of-plane technique.

4 pages, 4 figures, and submitted to PRL for publication