English

Resonant Parameters of Vector Charmonium-like States above 4.4 GeV

High Energy Physics - Experiment 2026-03-25 v1

Abstract

We analysis the s\sqrt{s}-dependent line shapes of the e+eDs+Ds1(2536)e^+e^-\to D_s^{+}D_{s1}^{*-}(2536), Ds+Ds2(2573)D_s^{+}D_{s2}^{*-}(2573), ϕχc1,2\phi\chi_{c1,2}, K+KJ/ψK^+K^-J/\psi, KS0KS0J/ψK_S^0 K_S^0 J/\psi, and K+Kψ(2S)K^+K^-\psi(2S) cross sections measured by the BESIII experiment using the four resonant structures ψ(4230)\psi(4230), ψ(4500)\psi(4500), ψ(4660)\psi(4660), and ψ(4710)\psi(4710), by performing a simultaneous χ2\chi^2-minimized fit. Their masses and widths are obtained. We find that the processes e+eDs+Ds1(2536)e^+e^-\to D_s^{+}D_{s1}^{*-}(2536), e+eDs+Ds2(2573)e^+e^-\to D_s^{+}D_{s2}^{*-}(2573), and e+eϕχc1,2e^+e^-\to \phi\chi_{c1,2} are all dominantly produced via the ψ(4660)\psi(4660) and ψ(4710)\psi(4710) decays.

Keywords

Cite

@article{arxiv.2603.23418,
  title  = {Resonant Parameters of Vector Charmonium-like States above 4.4 GeV},
  author = {Chunhua Li and Wanting Liu and Linfa Tang and Ying Ding},
  journal= {arXiv preprint arXiv:2603.23418},
  year   = {2026}
}

Comments

6 pages, 2 figures