[en] We present the first precision measurement of the spin-dependent asymmetry in the threshold region of ³He(e,e(prime)) at Q²-values of 0.1 and 0.2 (GeV/c)². The agreement between the data and non-relativistic Faddeev calculations which include both final-state interactions (FSI) and meson-exchange currents (MEC) effects is very good at Q² = 0.1 (GeV/c)², while a small discrepancy at Q² = 0.2 (GeV/c)² is observed

[en] The ratio of the proton's elastic electromagnetic form factors, G_Ep/G_Mp, was obtained by measuring P_t and P_ell, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic (rvec e)p → e(rvec p) reaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV². In the single photon exchange approximation, the ratio G_Ep/G_Mp is directly proportional to the ratio P_t/P_ell. The simultaneous measurement of P_t and P_#ell# in a polarimeter reduces systematic uncertainties. The results for the ratio G_Ep/G_Mp show a systematic decrease with increasing Q², indicating for the first time a definite difference in the distribution of charge and magnetization in the proton. The data have been reanalyzed and systematic uncertainties have become significantly smaller than previously published results

[en] The ratio of the proton's elastic electromagnetic form factors, G_Ep/G_Mp was obtained by measuring P_t and P(ell), the transverse and the longitudinal recoil proton polarization, respectively. For elastic ep → ep, G_Ep/G_Mp is proportional to P_t/P(ell). Simultaneous measurement of P_t and P(ell) in a polarimeter provides good control of the systematic uncertainty. The results for the ratio G_Ep/G_Mp show a systematic decrease as Q² increases from 0.5 to 3.5 GeV², indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton