We report the measurement of the beam-vector and tensor asymmetries AVed and ATd in quasielastic (e→,e′p) electrodisintegration of the deuteron at the MIT-Bates Linear Accelerator Center up to missing momentum of 500 MeV/c. Data were collected simultaneously over a momentum transfer range 0.1 < Q2 < 0.5 (GeV/c)2 with the Bates Large Acceptance Spectrometer Toroid using an internal deuterium gas target polarized sequentially in both vector and tensor states. The data are compared with calculations. The beam-vector asymmetry AVed is found to be directly sensitive to the D-wave component of the deuteron and has a zero crossing at a missing momentum of about 320 MeV/c, as predicted. The tensor asymmetry ATd at large missing momentum is found to be dominated by the influence of the tensor force in the neutron-proton final-state interaction. The new data provide a strong constraint on theoretical models.
Digital Object Identifier (DOI)
DeGrush, A.; Maschinot, A.; Akdogan, T.; Alarcon, R.; Bertozzi, W.; Booth, E.; Botto, T.; Calarco, J. R.; Clasie, B.; Crawford, Christopher; Dow, K.; Farkhondeh, M.; Fatemi, Renee H.; Filoti, O.; Franklin, W.; Gao, H.; Geis, E.; Gilad, S.; Hasell, D. K.; Karpius, P.; Kohl, M.; Kolster, H.; Lee, T.; Matthews, J.; McIlhany, K.; Meitanis, N.; Milner, R.; Rapaport, J.; Redwine, R.; and Seely, J., "Measurement of the Vector and Tensor Asymmetries at Large Missing Momentum in Quasielastic (e→,e'p Electron Scattering from Deuterium" (2017). Physics and Astronomy Faculty Publications. 548.