Polarization Transfer in {sup 4}He(e-vector,e{sup '}p-vector){sup 3}H
- University of South Carolina (United States)
Polarization transfer in quasi-elastic nucleon knockout is sensitive to the properties of the nucleon in the nuclear medium, including possible modification of the nucleon form factor and/or spinor. In our recently completed experiment E03-104 at Jefferson Lab we measured the proton recoil polarization in the {sup 4}He(e-vector,e{sup '}p-vector){sup 3}H reaction at a Q{sup 2} of 0.8 (GeV/c){sup 2} and 1.3 (GeV/c){sup 2} with unprecedented precision. These data complement earlier data between 0.4 and 2.6 (GeV/c){sup 2} from both Mainz and Jefferson Lab, in which the measured ratio of polarization-transfer coefficients differs from a fully relativistic DWIA calculation. Preliminary results hint at a possible unexpected Q{sup 2} dependence in the polarization transfer coefficient ratio. Final analysis will help constrain FSI models.
- OSTI ID:
- 21036028
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 947; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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