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Determination of Resonance Couplings and High-Energy Amplitudes in gamma n --> pi n Using Fixed-t Dispersion Relations

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DOI: 10.1016/0370-2693(74)90097-5
OAI: oai:inspirehep.net:90592
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INSPIRE-HEP
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Abstract

The real parts of the amplitudes are generated entirely from their imaginary parts via d.rs., and essentially all available data is included at all energies with momentum transfer | t | < 1 GeV 2 . A total of 46 resonance couplings and 50 high energy parameters are varied to fit all the data simultaneously with a χ 2 of 4.8 per data point.

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