Abstract
We construct an effective Lagrangian for the hadronic decays of a heavy excited s-wave-spin-one quarkonium Ψ′ into a lower s-wave-spin-one state Ψ. We show that reasonable fits to the measured invariant mass spectra in the charmonium and bottomonium systems can be obtained within this framework. The mass dependence of the various terms in the Lagrangian is discussed on the basis of a quark model.
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The idea we are proposing here is along the lines as in [5], where this method is applied to ϕ decays
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Mannel, T., Urech, R. Hadronic decays of excited heavy quarkonia. Z Phys C - Particles and Fields 73, 541–546 (1997). https://doi.org/10.1007/s002880050344
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DOI: https://doi.org/10.1007/s002880050344