$ρ\to 4π$ in chirally symmetric models

Details $ρ\to 4π$ in chirally symmetric models $ρ\to 4π$ in chirally symmetric models

1995-08-23

arxiv.org/abs/hep-ph/9508356v1

Phys.Lett. B365 (1996) 292

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages (RevTeX)

Scientific paper

10.1016/0370-2693(95)01273-7

The decays $\rho^0\to 2\pi^+2\pi^-$ and $\rho^0\to 2\pi^0\pi^+\pi^-$ are studied using various effective Lagrangians for $\pi$ and $\rho$ (and in some cases $a_1$) mesons, all of which respect the approximate chiral symmetry of the strong interaction. Partial widths of the order of 1 keV or less are found in all cases. These are an order of magnitude smaller than recent predictions based on non-chiral models.

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