2001/05/02 by M. P. Rekalo, Rekalo, M. P., E. Tomasi-Gustafsson +1
Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/0105002
18 pages, 9 figures
arxiv created 2001/05/02 · arxiv updated 2009/12/01
We calculate polarization phenomena for virtual Compton scattering on protons, at relatively large momentum transfer 1 GeV2 ≤ -q2≤ 5 GeV2 on the basis of a model for γ^*+ p→ γ+p with two main contributions: π0-exchange in t-channel and Δ-excitation in s-channel. This model applies from threshold to Δ region. The parameters entering in this model, such as coupling constants and electromagnetic form factors are well known. The analyzing powers for γ^*+ p→ γ+ p and the components of the final proton polarization in γ^*+ p→ γ+ p are large in absolute value and show strong sensitivity to π\bigotimesΔ interference. These results can be applied to the calculation of radiative corrections to polarization phenomena in elastic ep-scattering.