Neutron charge form factor at largeq2

Abstract

The neutron charge form factor ${G}_{\mathrm{En}}(q)$ is determined from an analysis of the deuteron quadrupole form factor ${F}_{C2}(q)$ data. Recent calculations, based on a variety of different model interactions and currents, indicate that the contributions associated with the uncertain two-body operators of shorter range are relatively small for ${F}_{C2}(q),$ even at large momentum transfer q. Hence, ${G}_{\mathrm{En}}(q)$ can be extracted from ${F}_{C2}(q)$ at large ${q}^{2}$ without undue systematic uncertainties from theory.