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100 events, thus improving by a factor 3 on the previous existing statistics in this energy interval. The form factor 
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′(1.6) we determine its parameters:
Γtot(
doi:10.1016/0370-2693(90)91881-B 
Copyright © 1990 Published by Elsevier Science B.V. All rights reserved.
Study of the J/ψ→γφφ decay
Received 14 February 1990.
Available online 18 October 2002.
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Abstract
The decay J/ψ→γφφ→γK+K−KS0KL0 has been studied from 8 × 106 J/ψ's produced in the DM2 apparatus at DCI. The branching ratio BR(J/ψ→γφφ)mφφ<2.9GeV/c2 = (3.4±0.8±0.6) × 10− agrees with the previous DM2 value from the four-charged-kaon mode. Tha analysis of both modes gives evidence of a resonant φφ production around 2.24 GeV/c2, preferably pseudoscalar, which accounts for about one half of the total φφ production below the ηc.
