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VOLUME 79 (2004) | ISSUE 1 | PAGE 16
The evaluation of the branching ratios of the decays φ(1020)→2π+2π-π0, π+π-3π0
PACS: 11.30.Rd, 12.39.Fe, 13.30.Eg
Abstract
Combining the Okubo-Zweig-Iizuka rule in the decay φ→ρπ→π+π-π0 with the ρ→4π decay amplitudes, we calculate the φ→2π+2π-π0 and φ→π+π-3π0 ones. The partial widths of the above φ decays are evaluated, and the excitation curves in e+e- annihilation are obtained, assuming reasonable particular relations among the parameters characterizing the anomalous terms of the HLS Lagrangian. The evaluated branching ratios B_{\phi\to\pi^+\pi^-3\pi^0}\approx2\cdot 10^{-7} and B_{\phi\to2\pi^+2\pi^-\pi^0}\approx7\cdot 10^{-7} are such that with the luminosity L=500 pb-1 attained at DAΦNE φ factory, one may already possess about 1685 events of the decays φ→5π.