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Article
Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering
Physical Review Letters
Document Type
Article
Article Version
Publisher's PDF
Publication Date
1-1-2007
Disciplines
Abstract
We have measured the beam-normal single-spin asymmetry in elastic scattering of transversely polarized 3 GeV electrons from unpolarized protons at Q2=0.15, 0.25 (GeV/c)2. The results are inconsistent with calculations solely using the elastic nucleon intermediate state and generally agree with calculations with significant inelastic hadronic intermediate state contributions. An provides a direct probe of the imaginary component of the 2γ exchange amplitude, the complete description of which is important in the interpretation of data from precision electron-scattering experiments.
Comments
Copyright American Physical Society
Publisher final version available at
http://prl.aps.org/pdf/PRL/v99/i9/e092301
Published Citation
D. S. Armstrong et al. [G0 Collaboration], "Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering", Physics Review Letters, Volume 99, Issue 99 092301 (2007).
DOI: 10.1103/PhysRevLett.99.092301
DOI
10.1103/PhysRevLett.99.092301
None
Peer Reviewed
Citation Information
D. S. Armstrong, Angela Biselli and G0 Collaboration. "Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering" Physical Review Letters Vol. 99 Iss. 99 (2007) Available at: http://works.bepress.com/angela_biselli/33/