Further search for the two photon production of the glueball candidate f(J)(2220)

Alam, M.S.; Athar, S.B.; Ling, Z.; Mahmood, A.H.; Timm, S.; Wappler, F.; Anastassov, A.; Duboscq, J.E.; Gan, K.K.; Hart, T.

doi:10.1103/PhysRevLett.81.3328

Further search for the two photon production of the glueball candidate f(J)(2220)

CLEO

Collaboration

May, 1998

8 pages

Published in:

Phys.Rev.Lett. 81 (1998) 3328-3332

e-Print:

hep-ex/9805033 [hep-ex]

DOI:

10.1103/PhysRevLett.81.3328

PDG:

{{\mathit f}_{{{J}}}{(2220)}}

\rightarrow

{{\mathit \gamma}}{{\mathit \gamma}}

Report number:

SLAC-REPRINT-1998-095,
CLNS-98-1560,
CLEO-98-08

Experiments:

CESR-CLEO-II

View in:

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Abstract:

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)

.

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
search for: f4(2220)
f4(2220): hadronic decay
mass spectrum: (pi+ pi-)
K: pair production
width: branching ratio
upper limit
glueball

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