European Physical Journal C
Springer Berlin Heidelberg
BES Collaboration, Glueball, Radiative J/ψ Decay, KK̄ Decay Channel
We analyze the f0(1810) state recently observed by the BES collaboration via radiative J/ψ decay to a resonant φω spectrum and confront it with DM2 data and glueball theory. The DM2 group only measured ωω decays and reported a pseudoscalar but no scalar resonance in this mass region. A rescattering mechanism from the open flavored KK̄ decay channel is considered to explain why the resonance is only seen in the flavor asymmetric ωφ branch 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 decay width of a glueball with this mass to be roughly 100 MeV, in agreement with the narrow, newly found f0, and smaller than the expected estimate of 200–400 MeV. We conclude that this discovered scalar hadron deserves further experimental investigation, especially in the KK̄ channel, and if shown to be different from the f0(1710), will become a solid glueball candidate. Finally we comment on other, but less likely, possible assignments for this state.
Bicudo, Pedro; Cotanch, S.R.; Llanes-Estrada, Felipe J.; and Robertson, David G., "The BES f0(1810): A New Glueball Candidate" (2007). Physics Faculty Scholarship. 9.
Bicudo, P., Cotanch, S.R., Llanes-Estrada, F.J., & Robertson, D.G. (2007). The BES f0(1810): A New Glueball Candidate. European Physical Journal C, 52(2), 363-374. DOI: 10.1140/epjc/s10052-007-0377-5
Copyright 2007 European Physical Journal C
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