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ISSN - 01709739, Zeitschrift f�r Physik C-Particles and Fields, 1987, vol. 37, p. 1-5

Search for rare radiative decays of Φ-meson at VEPP-2M

Druzhinin V. P., Dubrovin M. S., Eidelman S. I., Golubev V. B., Ivanchenko V. N., Kezerashvili G. Ya, Koop I. A., Pakhtusova E. V., Peryshkin A. N., Serednyakov S. I., Shatunov Yu M., Sidorov V. A.

Results of the search for rare radiative decay modes of the φ{symbol}-meson performed with the Neutral Detector at the VEPP-2M collider are presented. For the first time upper limits for the branching ratios of the following decay modes have been placed at 90% confidence level: {Mathematical expression} where H is a scalar (Higgs) boson with a mass 600 MeV<mH<1000 MeV, the real measurement is B(φ→Hγ)·B(H→2π0)<0.8·10-4, the quoted result is model dependent, as explained in the text, {Mathematical expression} where a is a particle with a low mass and a short lifetime, {Mathematical expression} where a is a particle with a low mass not observed in the detector. © 1987 Springer-Verlag.