Polarized 3He(e,e'n) Asymmetries in Three Orthogonal Measurements
- Kent State Univ., Kent, OH (United States)
Asymmetry measurements were conducted in Jefferson Lab's experimental Hall A through electron scattering from a polarized 3He target in the quasi-elastic polarized-3He(e,e'n) reaction. Measurements were made with the target polarized in the longitudinal direction with respect to the incoming electrons A_L, in a transverse direction that was orthogonal to the beam-line and parallel to the q-vector A_T, and in a vertical direction that was orthogonal to both the beam-line and the q-vector (A_y0). The experiment measured $$A_y0$$ at four-momentum transfer squared Q2 of 0.127 (GeV/c)2, 0.456 (GeV/c)2, and 0.953 (GeV/c)2. The A_T and A_L asymmetries were both measured at Q2 of 0.505 (GeV/c)2 and 0.953 (GeV/c)2. This is the first time that three orthogonal asymmetries have been measured simultaneously. Results from this experiment are compared with the plane wave impulse approximation (PWIA) and Faddeev calculations. These results provide important tests of models that use 3He as an effective neutron target and show that the PWIA holds above Q2 of 0.953 (GeV/c)2.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1052214
- Report Number(s):
- JLAB-PHY-12-1635; DOE/OR/23177-2333; arXiv:1209.2739
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the Electric Form Factor of the Neutron through d-vector(e-vector, e'n)p
A Measurement of the Neutron Electric Form Factor in Dvec ($\vec{e}$,e'n)p Quasielastic Scattering at Q2=0.5(GeV/c)2