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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 79, Issue 1, Pages 16–18
(Mi jetpl2197)
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This article is cited in 2 scientific papers (total in 2 papers)
FIELDS, PARTICLES, AND NUCLEI
The evaluation of the branching ratios of the decays $\phi(1020)\to2\pi^+2\pi^-\pi^0$, $\pi^+\pi^-3\pi^0$
N. N. Achasov, A. A. Kozhevnikov Laboratory of Theoretical Physics, S. L. Sobolev Institute for Mathematics, 630090 Novosibirsk, Russia
Abstract:
Combining the Okubo–Zweig–Iizuka rule in the decay $\phi\to\rho\pi\to\pi^+\pi^-\pi^0$ with the $\rho\to4\pi$ decay amplitudes, we calculate the $\phi\to2\pi^+2\pi^-\pi^0$ and $\phi\to\pi^+\pi^-3\pi^0$ ones. The partial widths of the above $\phi$ 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 DA$\Phi$NE $\phi$ factory, one may already possess about $1685$ events of the decays $\phi\to5\pi$.
Received: 20.11.2003
Citation:
N. N. Achasov, A. A. Kozhevnikov, “The evaluation of the branching ratios of the decays $\phi(1020)\to2\pi^+2\pi^-\pi^0$, $\pi^+\pi^-3\pi^0$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 79:1 (2004), 16–18; JETP Letters, 79:1 (2004), 13–15
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