Abstract
The HAPPEX Collaboration at Jefferson Lab has measured the transverse beam spin asymmetries (A T ) for elastic electron scattering from proton and 4He targets. The experiment was conducted using a vertically polarized electron beam of energy ∼ 3 GeV, at a Q 2 ∼ 0.1 GeV2 and a scattering angle θ lab ≈ 6°. The preliminary results are reported here. The 4He measurement is the first measurement of A T from a nucleus. A T for 4He is non-negligible; therefore, it will be necessary to make measurements of A T for future parity-violating experiments using nuclear targets.
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© 2007 Società Italiana di Fisica / Springer-Verlag
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Kaufmana, L.J. (2007). Transverse beam asymmetries measured from 4He and hydrogen targets. In: de Jager, K., et al. Proceedings of The 3rd Workshop From Parity Violation to Hadronic Structure and more.... Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74413-9_24
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DOI: https://doi.org/10.1007/978-3-540-74413-9_24
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