We have measured the transverse asymmetry $A_{T^{\text{'}}}$ in the quasielastic ${}^3\overrightarrow{\mathrm{He}}(\overrightarrow{e},e^{\text{'}})$ process with high precision at $Q^2$ values from 0.1 to $0.6(\mathrm{GeV}/c){}^2$. The neutron magnetic form factor $G_M^n$ was extracted at $Q^2$ values of 0.1 and $0.2(\mathrm{GeV}/c){}^2$ using a nonrelativistic Faddeev calculation which includes both final-state interactions (FSI) and meson-exchange currents (MEC). Theoretical uncertainties due to the FSI and MEC effects were constrained with a precision measurement of the spin-dependent asymmetry in the threshold region of ${}^3\overrightarrow{\mathrm{He}}(\overrightarrow{e},e^{\text{'}})$. We also extracted the neutron magnetic form factor $G_M^n$ at $Q^2$ values of 0.3 to $0.6(\mathrm{GeV}/c){}^2$ based on plane wave impulse approximation calculations.

• Received 9 May 2006

DOI:https://doi.org/10.1103/PhysRevC.75.034003