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Exchange-degenerate Regge trajectories: a fresh look from resonance and forward scattering regions

P. Desgrolard·M. Giffon·E. Martynov·E. Predazzi
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Abstract

The exchange-degeneracy of the mesonic $f$, $ω$, $ρ$ and $a_{2}$ Regge trajectories, dominant at moderate and high energies in hadron elastic scattering, is analyzed from two viewpoints. The first one concerns the masses of the resonances lying on these trajectories; the second one deals with the total cross-sections and the ratios of the real to the imaginary parts of the forward amplitudes of hadron and photon induced reactions. Neither set of data supports exact exchange-degeneracy.

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P. Desgrolard, M. Giffon, E. Martynov, E. Predazzi. 2000-11-19. Exchange-degenerate Regge trajectories: a fresh look from resonance and forward scattering regions. https://doi.org/10.1007/s100520100548

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