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arXiv · hep-ph/0107219

Hadronic scattering amplitudes: medium-energy constraints on asymptotic behaviour

J. R. Cudell·V. Ezhela·P. Gauron·K. Kang·Yu. V. Kuyanov·S. Lugovsky·B. Nicolescu·N. Tkachenko
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Abstract

We consider several classes of analytic parametrisations of hadronic scattering amplitudes, and compare their predictions to all available forward data (p p, pbar p, pi p, K p, gamma p, gamma gamma, Sigma p). Although these parametrisations are very close for sqrt(s) > 9 GeV, it turns out that they differ markedly at low energy, where a universal pomeron term ~log^2(s) enables one to extend the fit down to sqrt(s)=4 GeV.

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J. R. Cudell, V. Ezhela, P. Gauron, K. Kang, Yu. V. Kuyanov, S. Lugovsky, B. Nicolescu, N. Tkachenko. 2001-12-11. Hadronic scattering amplitudes: medium-energy constraints on asymptotic behaviour. https://doi.org/10.1103/physrevd.65.074024

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