Further Search for the Two-Photon Production of the Glueball Candidate fJ(2220)

M. S. Alam et al. (CLEO Collaboration)
Phys. Rev. Lett. 81, 3328 – Published 19 October 1998
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Abstract

The CLEO II detector at the e+e storage ring CESR has been used to search for two-photon production of the fJ(2220) decaying into π+π. No evidence for a signal is found in 4.77fb1 of data and a 95% C.L. upper limit on [ΓγγBπ+π]fJ(2220) of 2.5 eV is set. If this result is combined with the BES Collaboration's measurement of fJ(2220)π+π in radiative J/ψ decay and the recent CLEO result for [ΓγγBKS0KS0]fJ(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 fJ(2220).

  • Received 28 May 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.3328

©1998 American Physical Society

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Vol. 81, Iss. 16 — 19 October 1998

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