Polarized Compton scattering off the proton is studied within the framework of subtracted dispersion relations for photon energies up to 300 MeV. As a guideline for forthcoming experiments, we focus the attention on the role of the proton's spin polarizabilities and investigate the most favorable conditions to extract them with a minimum of model dependence. We conclude that a complete separation of the four spin polarizabilities is possible, at photon energies between threshold and the Δ(1232) region, provided one can achieve polarization measurements with an accuracy of a few percent.
Proton spin polarizabilities from polarized Compton scattering
PASQUINI, BARBARA;
2007-01-01
Abstract
Polarized Compton scattering off the proton is studied within the framework of subtracted dispersion relations for photon energies up to 300 MeV. As a guideline for forthcoming experiments, we focus the attention on the role of the proton's spin polarizabilities and investigate the most favorable conditions to extract them with a minimum of model dependence. We conclude that a complete separation of the four spin polarizabilities is possible, at photon energies between threshold and the Δ(1232) region, provided one can achieve polarization measurements with an accuracy of a few percent.File in questo prodotto:
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