Target Normal Spin Asymmetry of the Elastic ep-Scattering at Resonance Energy

Abstract

We study the target normal spin asymmetry for the reaction $ep\to ep$ at electron energy up to few GeV in the laboratory frame. The asymmetry is proportional to the imaginary part of the reaction scattering amplitude. To estimate the imaginary part of the amplitude we use the unitarity relation and saturate the intermediate hadron states by the proton and resonances from the first, second and third resonance regions. The resonance electromagnetic transition amplitudes, needed to evaluate the asymmetry, are taken from experiment.

arXiv comment9 pages, 5 figures; accepted for publication in Physical Review C

References in corpus (9)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The ratio of proton's electric to magnetic form factors measured by polarization transfer
• Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
• Proton elastic form factor ratios to $Q^2$ = 3.5 GeV${}^2$ by polarization transfer
• Partonic calculation of the two-photon exchange contribution to elastic electron-proton scattering at large momentum transfer
• How well do we know the electromagnetic form factors of the proton?
• Electroproduction of nucleon resonances
• Resonance estimates for single spin asymmetries in elastic electron-nucleon scattering
• Approach to Perturbative Results in the N-Delta Transition

Cited by in corpus (6)

• On Delta resonance contribution to two-photon exchange amplitude
• $\Delta (1232)$ Resonance Contribution to Two-Photon Exchange in Electron-Proton Scattering Revisited
• Two photon exchange amplitude with πN intermediate states: spin-1/2 and spin-3/2 channels
• Transverse single spin asymmetries in inclusive deep-inelastic scattering
• Beam normal spin asymmetry of elastic $eN$ scattering in the leading logarithm approximation
• Two photon exchange in elastic electron scattering off hadronic systems