Upper bounds on the fine structure constant and on nucleon magnetic moments in terms of Compton scattering cross sections |
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Authors: | SM Roy AS Vengurlekar |
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Institution: | CERN, Geneva, Switzerland;Tata Institute of Fundamental Research, Bombay, India |
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Abstract: | We derive and compare with experimental data the bound , where α is the fine-structure constant, mp the proton mass, ν0 the photo-pion production threshold, σtot and are the unpolarized total hadronic photo-absorption cross section on protons and the unpolarized forward differential cross section for proton Compton scattering at photon-lab energy ν′, and λ and ν1 are any real numbers. We derive similar bounds on proton and neutron magnetic moments. |
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