Analytic model of Regge trajectories

Details Analytic model of Regge trajectories Analytic model of Regge trajectories

2000-11-02

arxiv.org/abs/hep-ph/0011035v1

Eur.Phys.J. A10 (2001) 217-221

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 3 figures

Scientific paper

10.1007/s100500170133

A model for a Regge trajectory compatible with the threshold behavior required by unitarity and asymptotics in agreement with analyticity constraints is given in explicit form. The model is confronted in the time-like region with widths and masses of the mesonic resonances and, in the space-like region, the $\rho$ trajectory is compared with predictions derived from $\pi-N$ charge-exchange reaction. Breaking of the exchange degeneracy is studied in the model and its effect on both the masses and widths is determined.

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