In this Letter, we report new measurements of the proton electromagnetic form factor ratio using the recoil polarization method, at momentum transfers Q2=5.2, 6.7, and 8.5??GeV2. By extending the range of Q2 for which GEp is accurately determined by more than 50%, these measurements will provide significant constraints on models of nucleon structure in the nonperturbative regime.
COBISS.SI-ID: 2252132
The electric form factor of the neutron GEn was determined from studies of the reaction 3He(e,e'n)pp in quasielastic kinematics. Longitudinally polarized electrons were scattered off a polarized target. The scattered electrons were detected in a magnetic spectrometer in coincidence with neutrons registered in a large-solid-angle detector. We more than doubled the Q2 range over which GEn is known.
COBISS.SI-ID: 2299748
New precise results of a measurement of the elastic electron-proton scattering cross section performed at the Mainz Microtron MAMI are presented. About 1400 cross sections were measured with negative four-momentum transfers squared up to Q2=1??(GeV/c)2 with statistical errors below 0.2%. The electric and magnetic form factors of the proton were extracted by fits of a large variety of form factor models directly to the cross sections.
COBISS.SI-ID: 2286948
This paper reviews some of the outstanding current experimental efforts with (polarized or unpolarized) electron scattering on (polarized or unpolarized) 3He targets in TJNAF and MAMI laboratories.
COBISS.SI-ID: 2209124
Kaon electroproduction was studied as a function of Q2, W, and t, for different values of the virtual-photon polarization parameter (beam energies 3.40 to 5.75?GeV). The CMS cross section was determined for twenty-one kinematics corresponding to Q2 of 1.90 and 2.35?GeV2, and the longitudinal, ?L, and transverse, ?T, cross sections were separated using the Rosenbluth technique at fixed W and t.
COBISS.SI-ID: 2249572