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arXiv · hep-ph/0305269

Hunting for glueballs in electron-positron annihilation

Stanley J. Brodsky·Alfred Scharff Goldhaber·Jungil Lee
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Abstract

We calculate the cross section for the exclusive production of J^{PC}=0^{++} glueballs G_0 in association with the J/psi in e^+e^- annihilation using the pQCD factorization formalism. The required long-distance matrix element for the glueball is bounded by CUSB data from a search for resonances in radiative Upsilon decay. The cross section for e^+e^- -> J/psi+ G_0 at sqrt{s}=10.6 GeV is similar to exclusive charmonium-pair production e^+e^- -> J/psi+h for h=eta_c and chi_{c0}, and is larger by a factor 2 than that for h=eta_{c}(2S). As the subprocesses gamma^* -> (c c-bar) (c c-bar) and gamma^* -> (c c-bar) (g g) are of the same nominal order in perturbative QCD, it is possible that some portion of the anomalously large signal observed by Belle in e^+ e^- -> J/psi X may actually be due to the production of charmonium-glueball J/psi G_J pairs.

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Stanley J. Brodsky, Alfred Scharff Goldhaber, Jungil Lee. 2003-09-09. Hunting for glueballs in electron-positron annihilation. https://doi.org/10.1103/physrevlett.91.112001

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