New Measurements of the Transverse Beam Asymmetry for Elastic Electron Scattering from Selected Nuclei
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Abrahamyan-2012-New measurements of the transverse beam asymmetry.pdf
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Author(s)
Beck, A.
Deconinck, Wouter
Huang, J.
Kelleher, Aidan Michael
Kowalski, Stanley B.
Muangma, Navaphon
Puckett, A. J. R.
Qiang, Y.
Sulkosky, Vincent
Ziskin, Vitaliy
Date Issued
November 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Abrahamyan, S. et al. “New Measurements of the Transverse Beam Asymmetry for Elastic Electron Scattering from Selected Nuclei.” Physical Review Letters 109.19 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We have measured the beam-normal single-spin asymmetry A[subscript n] in the elastic scattering of 1–3 GeV transversely polarized electrons from [superscript 1]H and for the first time from [superscript 4]He, [superscript 12]C, and [superscript 208]Pb. For [superscript 1]H, [superscript 4]He, and [superscript 12]C, the measurements are in agreement with calculations that relate An to the imaginary part of the two-photon exchange amplitude including inelastic intermediate states. Surprisingly, the [superscript 208]Pb result is significantly smaller than the corresponding prediction using the same formalism. These results suggest that a systematic set of new A[subscript n] measurements might emerge as a new and sensitive probe of the structure of heavy nuclei.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.192501
