Further Search for the Two-Photon Production of the Glueball Candidate fJ(2220)f_{J}(2220)

The CLEOII detector at the Cornell e+ e- storage ring CESR has been used to search for the two-photon production of the $f_J(2220)$ decaying into pi+ pi-. No evidence for a signal is found in data corresponding to an integrated luminosity of 4.77/fb and a 95% CL upper limit on $\Gamma_{two-photon} * BR{pi+ pi-}$ of 2.5 eV is set. If this result is combined with the BES Collaboration's measurement of $f_J(2220) -> pi+ pi-$ in radiative $J/\psi$ decay, a 95% CL lower limit on the stickiness of the $f_J(2220)$ of 73 is obtained. If the recent CLEO result for \Gamma_{two-photon} * BR{\K_S K_S} is combined with the present result, the stickiness of the $f_J(2220)$ is found to be larger than 102 at the 95% CL. These results for the stickiness (the ratio of the probabilities for two-gluon coupling and two-photon coupling) provide further support for a substantial neutral parton content in the $f_J(2220)$.Comment: 8 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLN

Further search for the two-photon production of the glueball candidate fJ(2220)

The CLEO II detector at the e e storage ring CESR has been used to search for two-photon production of the f (2220) decaying into π π . No evidence for a signal is found in 4.77fb of data and a 95% C.L. upper limit on [τ B ] (2220) of 2.5 eV is set. If this result is combined with the BES Collaboration's measurement of f (2220)→π π in radiative J/Ψ decay and the recent CLEO result for [τ BK K ] (2220), a 95% C.L. lower limit on the stickiness of 102 is obtained. This result for the stickiness provides further support for a substantial neutral parton content in the f (2220). © 1998 The American Physical Society. + + − −1 + − + − 0 0 − J γγ π π f J J γγ S S f J