Abstract
New measurements of the reactione + e −→ωπ confirm previous evidence for the decayρ′1→ωπ and provide a strong constraint on the mass of theρ′1. The results from a detailed analysis of these data are compared with those from a corresponding analysis of new data on the reactione + e −→ρπ. It is shown that\(\Gamma (\rho '_1 \to \omega \pi ) \sim \tfrac{1}{3}\Gamma (\omega '_1 \to \rho \pi )\) in accord with expectation. This identification of a strongρ′1→ωπ decay supports a previous claim that theρ′1 and theC(1480), observed in the ϕπ channel, cannot be different manifestations of the same particle.
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Donnachie, A., Clegg, A.B. The decays of theρ′1 andω′1 mesons. Z. Phys. C - Particles and Fields 51, 689–693 (1991). https://doi.org/10.1007/BF01565597
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DOI: https://doi.org/10.1007/BF01565597