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Journal Articles Physical Review D Year : 2002

Hadronic scattering amplitudes: medium-energy constraints on asymptotic behaviour

J. R. Cudell
  • Function : Author
V. Ezhela
  • Function : Author
K. Kang
  • Function : Author
Yu. V. Kuyanov
  • Function : Author
S. Lugovsky
  • Function : Author
N. Tkachenko
  • Function : Author

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.

Dates and versions

in2p3-00192807 , version 1 (29-11-2007)

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J. R. Cudell, V. Ezhela, P. Gauron, K. Kang, Yu. V. Kuyanov, et al.. Hadronic scattering amplitudes: medium-energy constraints on asymptotic behaviour. Physical Review D, 2002, 65, pp.074024. ⟨10.1103/PhysRevD.65.074024⟩. ⟨in2p3-00192807⟩
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