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ISSN - 01709739, Zeitschrift f�r Physik C-Particles and Fields, 1989, vol. 42, p. 505-510

Search for ξ(2.2) and X(2.2) in radiative decays of Υ{hooked}-meson

Baru S. E., Beilin M. V., Blinov A. E., Blinov V. E., Bondar A. E., Bukin A. D., Eidelman Yu I., Groshev V. R., Kiselev V. A., Klimenko S. G., Mishnev S. I., Onuchin A. P., Panin V. S., Petrov V. V., Protopopov I. Ya, Shamov A. G., Sidorov V. A., Skovpen Yu I., Skrinsky A. N., Tayursky V. A., Telnov V. I., Temnykh A. B., Tikhonov Yu A., Tumaikin G. M., Undrus A. E., Vorobiov A. I., Zhilich V. N., Zholents A. A.

The results of an experiment on the search for ξ(2.2) and X(2.2) in the radiative decays of the Υ-meson are presented. The experiment was carried out with the MD-1 detector at the VEPP-4 collider. An upper limit B(Υ→γξ)B(ξ→K+K-)<2·10-4 is obtained at 90% C.L. Results are presented on the search for the decay Υ→γX, X→ φ{symbol}φ{symbol} not previously investigated. For this decay the upper limit B(Υ→γX)B(X→φ{symbol}φ{symbol})<3·10-3 is obtained at 90% C.L. © 1989 Springer-Verlag.