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The BES f_0(1810): a new glueball candidate

Pedro Bicudo·Stephen R. Cotanch·Felipe J. Llanes-Estrada·David G. Robertson
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Abstract

We analyze the f_0(1810) state recently observed by the BES collaboration via radiative J/ψdecay to a resonant ϕωspectrum and confront it with DM2 data and glueball theory. The DM2 group only measured ωωdecays and reported a pseudoscalar but no scalar resonance in this mass region. A rescattering mechanism from the open flavored KKbar decay channel is considered to explain why the resonance is only seen in the flavor asymmetric ωϕbranch along with a discussion of positive C parity charmonia decays to strengthen the case for preferred open flavor glueball decays. We also calculate the total glueball decay width to be roughly 100 MeV, in agreement with the narrow, newly found f_0, and smaller than the expected estimate of 200-400 MeV. We conclude that this discovered scalar hadron is a solid glueball candidate and deserves further experimental investigation, especially in the K-Kbar channel. Finally we comment on other, but less likely, possible assignments for this state.

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Pedro Bicudo, Stephen R. Cotanch, Felipe J. Llanes-Estrada, David G. Robertson. 2006-06-04. The BES f_0(1810): a new glueball candidate. https://doi.org/10.1140/epjc%2Fs10052-007-0377-5

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