Transverse beam asymmetries from $^4$He and hydrogen targets
The HAPPEX Collaboration at Jefferson Lab has measured the transverse beam spin asymmetries ($$A_T$$) for elastic electron scattering from proton and $^4$He targets. The experiment was conducted using a vertically polarized electron beam of energy ~3 GeV at $Q^2$ ~0.1 GeV$^2$ and a scattering angle $$\theta_{lab}$$ ~6$$^{\circ}$$. The preliminary results are reported here. The $^4$He measurement is non-neglible; therefore, it will be necessary to make measurements of $$A_T$$ for future parity-violating experiments using nuclear targets
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 909372
- Report Number(s):
- JLAB-PHY-07-649; DOE/OR/23177-0079
- Conference Information:
- Journal Name: Eur. Phys. J. A Journal Volume: 32
- Country of Publication:
- United States
- Language:
- English
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