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Gluonic mesons in \(J/\psi\) radiative decay

  • Xue–Qian Li
  • Philip R. Page
Theoretical physics

Abstract.

Two–gluon coupling of gluonic mesons is estimated in a spectator model to be considerably larger than that of \(Q\bar{Q}\). As an example of a gluonic meson that may be produced in \(J/\psi\) radiative decay, we analyse \(\eta(1760)\). We deduce from experimental data that its branching ratio to two gluons is bounded, \(0.4\pm 0.3 \stackrel{<}{\scriptstyle \sim} BR(\eta(1760)\rightarrow gg)\stackrel{<}{\scriptstyle \sim} 0.9\pm 0.3\), consistent with a gluonic meson, but not compelling it. We propose further tests, and estimate the two–photon coupling of \(\eta(1760)\) to be \(1.4\pm 0.7\) keV.

Keywords

Experimental Data Radiative Decay Spectator Model Gluon Coupling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Xue–Qian Li
    • 1
  • Philip R. Page
    • 2
  1. 1. Particle Theory, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK GB
  2. 2. Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK (e-mail: prp@jlab.org. Tel.: (757) 2695028. Fax.: (757) 2697002) GB

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