English

Charmonium and exotics from Belle

High Energy Physics - Experiment 2015-09-15 v1

Abstract

The recent results on charmonium and charmoniumlike states from Belle experiment are reviewed. We summarise searches in BB decays for possible XX-like states in final states containing ηc\eta_c. The new measurement of e+eπ+πψ(2S)e^+e^-\to\pi^+\pi^-\psi(2S) improves the determination of the properties of Y(4360)Y(4360) and Y(4660)Y(4660). The fits including Y(4260)Y(4260) are performed. Evidence for a charged charmoniumlike structure at 4.05 GeV/c24.05~{\rm GeV}/c^2 is observed in the π±ψ(2S)\pi^{\pm}\psi(2S) intermediate state in the Y(4360)Y(4360) decays. Belle also updates the measurement on e+eKKJ/ψe^+e^-\to KKJ/\psi via initial state radiation using the full data sample. Finally, Belle observed X(3872)X(3872) in BKπ+X(π+πJ/ψ)B\to K\pi + X(\to\pi^+\pi^-J/\psi).

Keywords

Cite

@article{arxiv.1509.04156,
  title  = {Charmonium and exotics from Belle},
  author = {Xiaolong Wang},
  journal= {arXiv preprint arXiv:1509.04156},
  year   = {2015}
}

Comments

To be published in the proceedings of CHARM-2015, Detroit, MI, 18-22 May 2015

R2 v1 2026-06-22T10:56:13.545Z