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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1999, vol. 460, p. 242-247

Study of the radiative decay φ → ηγ with CMD-2 detector

Akhmetshin R. R., Anashkin E. V., Banzarov V. S., Barkov L. M., Bashtovoy N. S., Bondar A. E., Bondarev D. V., Chernyak D. V., Eidelman S. I., Fedotovich G. V., Gabyshev N. I., Grebeniuk A. A., Grigoriev D. N., Ivanov P. M., 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, Okhapkin V. S., Purlatz T. A., Root N. I., Ruban A. A., Ryskulov N. M., Shamov A. G., Shatunov Yu M., Shwartz B. A., 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., Roberts B. L., Thompson J. A., Hughes V. W.

Using the 1.9 pb-1 of data collected with the CMD-2 detector at VEPP-2M the decay mode φ → ηγ, η → π+ π- π0 has been studied. The obtained branching ratio is B(φ → ηγ) = (1.18 ± 0.03 ± 0.06)%. © 1999 Published by Elsevier Science B.V. All rights reserved.