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

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

2005-05-30

arxiv.org/abs/nucl-th/0505079v2

Phys.Rev.C72:035207,2005

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1103/PhysRevC.72.035207

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.

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