2000/11/21 by P. Baranov, P. S. Baranov, Baranov, P. S. +9
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.48550/arxiv.nucl-ex/0011015
4 pages, no figures. Talk at the 9th Seminar "Electromagnetic Interactions of Nuclei at Low and Medium Energies", Moscow, 20-22 September, 2000
arxiv created 2000/11/21 · arxiv updated 2009/12/01
An analysis of all experimental data of 50's - 90's on elastic gamma-p scattering at photon energies below 150 MeV (10 experimental works) is performed in order to determine the electric (alphap) and magnetic (betap) polarizabilities of the proton. A fit of these data with the two free parameters, alphap and betap, embedded into a theoretical cross section obtained on the basis of finite-energy s-channel dispersion relations gives the following world-average values of the proton polarizabilities (in units of 10-4 fm3): alphap = 11.7 +- 0.8 (stat+sys) +- 0.7 (model), betap = 2.3 +- 0.9 (stat+sys) +- 0.7 (model), where the first error takes into account statistical and systematic errors of the experimental cross sections and the second error does model uncertainties in the theoretical cross section.