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  • Search for \(f_1(1285) \to \pi^+\pi^-\pi^0\) decay with VES detector
    Dorofeev, V; Dzheliadin, R; Ekimov, A; Gavrilov, Yu; Yu Gouz; Ivashin, A; Kabachenko, V; Kachaev, I; Karyukhin, A; Khokhlov, Yu; Konstantinov, V; Makouski, M; Matveev, V; Myagkov, A; Nikolaenko, V; Ostankov, A; Polyakov, B; Ryabchikov, D; Shalanda, N; Soldatov, M; Solodkov, A A; Solodkov, A V; Solovianov, O; Zaitsev, A

    arXiv.org, 12/2007
    Paper

    The isospin violating decay \(f_1(1285)\to\pi^+\pi^-\pi^0\) has been studied at VES facility. This study is based at the statistics acquired in \(\pi^- Be\) interactions at 27, 36.6 and 41 GeV/c in diffractive reaction \(\pi^- N \to (f_1 \pi^-) N\). The \(f_1(1285) \to \pi^+\pi^-\pi^0\) decay is observed. The ratio of decay probabilities \(BR(f_1(1285) \to \pi^+\pi^-\pi^0)\) to \(BR(f_1(1285) \to \eta \pi^+\pi^-) \cdot BR(\eta \to \gamma\gamma)\) is \(\sim\:1.4%\).

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