χc0ω production in e+e- annihilation through ψ (4160)

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Abstract

We argue that the recent BESIII data on the cross section for the process e+e-→χc0ω in the center-of-mass energy range 4.21-4.42 GeV can be described by the contribution of the known charmoniumlike resonance ψ(4160) with the mass of about 4190 MeV. The value of the coupling in the transition ψ(4160)→χc0ω needed for this mechanism is comparable to that in another known similar transition, χc0(2P)→J/ψω. The suggested mechanism also naturally explains the relatively small reported value of the cross section for the final states χc1ω and χc2ω above their respective thresholds.

Original languageEnglish (US)
Article number034004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number3
DOIs
StatePublished - Feb 3 2015

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