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Nature of the decay cphi (1020)→ρ(770)π

1995; American Physical Society; Volume: 52; Issue: 5 Linguagem: Inglês

10.1103/physrevd.52.3119

1538-4500

N. N. Achasov, A. A. Kozhevnikov,

High-Energy Particle Collisions Research

The arguments based on QCD suggest that direct transition could be equally a probable source of the decay cphi(1020)\ensuremath{\rightarrow}\ensuremath{\rho}(770)\ensuremath{\pi}\ensuremath{\rightarrow}${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$${\mathrm{\ensuremath{\pi}}}^{0}$ as conventional cphi\ensuremath{\omega} mixing. Modern data on the decays cphi,\ensuremath{\omega}\ensuremath{\rightarrow}${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ are shown to point to an essential role of direct transition.