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arXiv · hep-ph/9412271

$ρ\to 4π$ DECAY

S. I. Eidelman·E. A. Kuraev·Z. K. Silagadze
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Abstract

The decay modes $ρ^0 \to 2π^+ 2π^-$ and $ρ^0 \to 2π^0 π^+ π^-$ are considered in the framework of the low energy effective chiral Lagrangian. The obtained values of the decay widths $Γ(ρ^0\to 2 π^+ 2 π^-)=$ $(16 \pm 1){\rm keV}$ and $Γ(ρ^0\to 2 π^0 π^+ π^-)= (6.0 \pm 0.2)$keV do not contradict the existing upper limits and seem to be big enough for the corresponding processes to be observed in future high luminosity experiments.

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S. I. Eidelman, E. A. Kuraev, Z. K. Silagadze. 1994-12-10. $ρ\to 4π$ DECAY. https://doi.org/10.1016/0370-2693(94)01697-b

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