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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2000, vol. 489, p. 125-130

Study of the process e+e- → π+π-π+π-π0 with the CMD-2 detector

Akhmetshin R. R., Anashkin E. V., Aulchenko V. M., Banzarov V. Sh, Barkov L. M., Baru S. E., Bondar A. E., Bragin A. V., Chernyak D. V., Eidelman S. I., Bashtovoy N. S., Fedotovich G. V., Gabyshev N. I., Grebeniuk A. A., Grigoriev D. N., Ignatov F. V., Ivanov P. M., Karpov S. V., Kazanin V. F., Khazin B. I., Koop I. A., Krokovny P. P., Kurdadze L. M., Kuzmin A. S., Logashenko I. B., Lukin P. A., Lysenko A. P., Mikhailov K. Yu, Milstein A. I., Nesterenko I. N., Okhapkin V. S., Perevedentsev E. A., Polunin A. A., Popov A. S., Purlatz T. A., Root N. I., Ruban A. A., Ryskulov N. M., Shamov A. G., Shatunov Yu M., Shwartz B. A., Sibidanov A. L., Sidorov V. A., Skrinsky A. N., Smakhtin V. P., Snopkov I. G., Solodov E. P., Stepanov P. Yu, Sukhanov A. I., Yudin Yu V., Zverev S. G., Thompson J. A.

The process e+e- → π+π-π+π-π0 has been studied in the center of mass energy range 1280 - 1380 MeV using 3.0 pb-1 of data collected with the CMD-2 detector in Novosibirsk. Analysis shows that the cross section of the five pion production is dominated by the contributions of the ηπ+π- and ωπ+π- intermediate states. (C) 2000 Published by Elsevier Science B.V.