Analytic Model of a Regge Trajectory in the Space-like and Time-like Regions

Details Analytic Model of a Regge Trajectory in the Space-like and Time-like Regions Analytic Model of a Regge Trajectory in the Space-like and Time-like Regions

1999-11-26

arxiv.org/abs/hep-ph/9911503v1

Phys.Part.Nucl. 31 (2000) 46

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, LaTeX, 4 eps figure, uses epsf.sty; presented at the Bogolyubov Conference, Moskow-Dubna-Kiev, 27 Sept.-6 Oct., 1999

Scientific paper

A model for a Regge trajectory compatible with the threshold behavior required by unitarity and asymptotics in agreement with Mandelstam analyticity is analyzed and confronted with the experimental data on the spectrum of the $\rho$ trajectory as well as those on the $\pi^- p\to \pi^0 n$ charge-exchange reaction. The fitted trajectory deviates considerably from a linear one both in the space-like and time-like regions, matching nicely between the two.

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