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arXiv · hep-ex/9910001

The process $e^+e^-\toπ^+π^-π^0$ in the energy range 2E_0=1.04 - 1.38 GeV

M. N. Achasov·V. M. Aulchenko·S. E. Baru·K. I. Beloborodov·A. V. Berdyugin·A. V. Bozhenok·A. D. Bukin·D. A. Bukin·S. V. Burdin·T. V. Dimova·S. I. Dolinsky·V. P. Druzhinin·M. S. Dubrovin·I. A. Gaponenko·V. B. Golubev·V. N. Ivanchenko·I. A. Koop·P. M. Ivanov·A. A. Korol·S. V. Koshuba·E. V. Pakhtusova·E. A. Perevedentsev·A. A. Salnikov·S. I. Serednyakov·V. V. Shary·Yu. M. Shatunov·V. A. Sidorov·Z. K. Silagadze·A. N. Skrinsky·Y. V. Usov·A. V. Varganov·A. V. Vasilyev·Yu. S. Velikzhanin
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Abstract

In the experiment with the SND detector at VEPP-2M e^+e^- collider the process $e^+e^-\toπ^+π^-π^0$ was studied in the energy range 2E_0 from 1.04 to 1.38 GeV. A broad peak was observed with the visible mass $M_{vis}=1220\pm 20$ MeV and cross section in the maximum $σ_0\simeq 4$ nb. The peak can be interpreted as a $ω$-like resonance $ω(1200)$.

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M. N. Achasov, V. M. Aulchenko, S. E. Baru, K. I. Beloborodov, A. V. Berdyugin, A. V. Bozhenok, A. D. Bukin, D. A. Bukin, S. V. Burdin, T. V. Dimova, S. I. Dolinsky, V. P. Druzhinin, M. S. Dubrovin, I. A. Gaponenko, V. B. Golubev, V. N. Ivanchenko, I. A. Koop, P. M. Ivanov, A. A. Korol, S. V. Koshuba, E. V. Pakhtusova, E. A. Perevedentsev, A. A. Salnikov, S. I. Serednyakov, V. V. Shary, Yu. M. Shatunov, V. A. Sidorov, Z. K. Silagadze, A. N. Skrinsky, Y. V. Usov, A. V. Varganov, A. V. Vasilyev, Yu. S. Velikzhanin. 1999-10-01. The process $e^+e^-\toπ^+π^-π^0$ in the energy range 2E_0=1.04 - 1.38 GeV. https://doi.org/10.1016/s0370-2693(99)00907-7

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