  We study the Regge-like spectra of light mesons in a relativized quark model.
An analytical mass formula is presented for the light unflavored mesons with
the help of auxiliary field method, by which a quasi-linear
Regge-Chew-Frautschi plot is predicted for the orbitally excited states. We
show that the trajectory slope is proportional to the inverse confining
parameter $1/a$ up to a factor depending on the strong coupling $\alpha_{s}$
when the orbital quantum number $L$ is large. The result is tested against the
experimental data of the spectra of the meson families
$\pi/b$,$\rho/a$,$\eta/h$ and $\omega/f$ in the ($L$,$M^{2}$) planes, with the
fitted parameters consistent with that in the literatures.

High Energy Physics - Phenomenology