Measurement of the Vector and Tensor Asymmetries at Large Missing Momentum in Quasielastic ( e → , e ′ p ) Electron Scattering from Deuterium

We report the measurement of the beam-vector and tensorasymmetries $A^V_{ed}$ and $A^T_d$ in quasielastic $(\vec{e}, e^{\ prime}p)$ electrodisintegration of the deuteron at the MIT- BatesLinear Accelerator Center up to missing momentumof 500~MeV/c. Data were collected simultaneously over a momentumtransfer range $0.1< Q^2<0.5$~(GeV/c)$^2$ with the BatesLarge Acceptance Spectrometer Toroid using an internal deuterium gas target, polarized sequentially in both vector and tensorstates. The data are compared with calculations. The beam-vector asymmetry $A^V_{ed}$ is found to be directly sensitive to the $D$-wave component of the deuteron and have a zero-crossingat a missing momentumof about 320~MeV/c, as predicted. The tensorasymmetry $A^T_d$ at large missing momentumis found to be dominated by the influence of the tensorforce in the neutron-proton final-state interaction. The new data provide a strong constraint on theoretical models.