Abstract
The CLEO detector at the Cornell e + e − storage ring CESR was used to search for the two-photon production of the glueball candidate f J(2220) in its decay to K S 0K S 0 and π + π −. I present restrictive upper limits on the product of the two-photon width and the respective branching fraction [ Γ γγ B K S 0K S 0 ] f J (2220) < 1.3 eV, 95% CL and [ Γ γγ B π + π − ] f J (2220) < 2.5 eV, 95% CL. When these two limits are combined to calculate a lower limit on the Stickiness, a measure of the two-gluon coupling relative to the two-photon coupling, a lower limit S f J (2220) > 102, 95% CL is found. A new measure of this ratio of couplings is the Gluiness; a combined lower limit of G f J (2220) > 66, 95% CL is found. These limits on the Stickiness and the Gluiness indicate that the f J (2220) is likely to have substantial neutral parton or glueball content.
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