Analytic parametrizations of the non-perturbative Pomeron and QCD-inspired models

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

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classification ✦ hep-ph

keywords parametrizationsanalyticenergypomeronalthoughamplitudesantiproton-protonavailable

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We consider several classes of analytic parametrizations of hadronic scattering amplitudes, and compare their predictions to all available forward data (proton- proton, antiproton-proton, pion-proton, kaon-proton, photon-proton, photon- photon, sigma-proton). Although these parametrizations are very close for energy larger than 9 GeV, it turns out that they differ markedly at low energy, where a universal Pomeron term ~(ln s)**2 enables one to extend the fit down to 4 GeV.

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Analytic parametrizations of the non-perturbative Pomeron and QCD-inspired models

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