2 research outputs found
Further Search for the Two-Photon Production of the Glueball Candidate
The CLEOII detector at the Cornell e+ e- storage ring CESR has been used to
search for the two-photon production of the 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 of 2.5 eV is set. If this result is combined with the BES Collaboration's
measurement of in radiative decay, a 95% CL
lower limit on the stickiness of the 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 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 .Comment: 8 pages, postscript file also available through
http://w4.lns.cornell.edu/public/CLN
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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