English

$\chi_{c0} \, \omega$ production in $e^+e^-$ annihilation through $\psi(4160)$

High Energy Physics - Phenomenology 2015-03-05 v2 High Energy Physics - Experiment

Abstract

We argue that the recent BESIII data on the cross section for the process e+eχc0ωe^+e^- \to \chi_{c0} \, \omega in the center of mass energy range 4.21 - 4.42 GeV can be described by the contribution of the known charmonium-like resonance ψ(4160)\psi(4160) with the mass of about 4190\,MeV. The value of the coupling in the transition ψ(4160)χc0ω\psi(4160) \to \chi_{c0} \, \omega needed for this mechanism is comparable to that in another known similar transition χc0(2P)J/ψω\chi_{c0}(2P) \to J/\psi \, \omega. The suggested mechanism also naturally explains the reported relative small value of the cross section for the final states χc1ω\chi_{c1} \, \omega and χc2ω\chi_{c2} \, \omega above their respective thresholds.

Keywords

Cite

@article{arxiv.1411.2952,
  title  = {$\chi_{c0} \, \omega$ production in $e^+e^-$ annihilation through $\psi(4160)$},
  author = {Xin Li and M. B. Voloshin},
  journal= {arXiv preprint arXiv:1411.2952},
  year   = {2015}
}

Comments

6 pages

R2 v1 2026-06-22T06:55:18.258Z