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

Authors

A. DeGrush, Massachusetts Institute of Technology
A. Maschinot, Massachusetts Institute of Technology
T. Akdogan, Bogazici University, Turkey
R. Alarcon, Arizona State University
W. Bertozzi, Massachusetts Institute of Technology
E. Booth, Boston University
T. Botto, Massachusetts Institute of Technology
J. R. Calarco, University of New Hampshire
B. Clasie, Massachusetts Institute of Technology
Christopher Crawford, University of KentuckyFollow
K. Dow, Massachusetts Institute of Technology
M. Farkhondeh, Massachusetts Institute of Technology
Renee H. Fatemi, University of KentuckyFollow
O. Filoti, University of New Hampshire
W. Franklin, Massachusetts Institute of Technology
H. Gao, Triangle Universities Nuclear Laboratory
E. Geis, Arizona State University
S. Gilad, Massachusetts Institute of Technology
D. K. Hasell, Massachusetts Institute of Technology
P. Karpius, University of New Hampshire
M. Kohl, Hampton University
H. Kolster, Massachusetts Institute of Technology
T. Lee, University of New Hampshire
J. Matthews, Massachusetts Institute of Technology
K. McIlhany, United States Naval Academy
N. Meitanis, Massachusetts Institute of Technology
R. Milner, Massachusetts Institute of Technology
J. Rapaport, Ohio University
R. Redwine, Massachusetts Institute of Technology
J. Seely, Massachusetts Institute of Technology

Abstract

We report the measurement of the beam-vector and tensor asymmetries A^V_ed and A^T_d 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 A^T_d 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.

Document Type

Article

Publication Date

10-30-2017

Notes/Citation Information

Published in Physical Review Letters, v. 119, issue 18, 182501, p. 1-5.

© 2017 American Physical Society

The copyright holder has granted permission for posting the article here.

Due to the large number of authors, only the first 30 and the authors affiliated with the University of Kentucky are listed in the author section above. For the complete list of authors, please download this article or visit: https://doi.org/10.1103/PhysRevLett.119.182501

This group of authors is collectively known as the BLAST Collaboration.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevLett.119.182501

Repository Citation

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.
https://uknowledge.uky.edu/physastron_facpub/548