English

Observation of e+e- to K+K-J/psi via Initial State Radiation at Belle

High Energy Physics - Experiment 2008-11-26 v2

Abstract

The process e+e- to K+K-J/psi is observed for the first time via initial state radiation. The cross section of e+e- to K+K-J/psi for center-of-mass energies between threshold and 6.0 GeV is measured using 673 fb^{-1} of data collected with the Belle detector on and off the Upsilon(4S) resonance. We also find evidence for e+e- to K_S K_S J/psi in the same energy region.

Keywords

Cite

@article{arxiv.0709.2565,
  title  = {Observation of e+e- to K+K-J/psi via Initial State Radiation at Belle},
  author = {C. Z. Yuan and Belle Collaboration},
  journal= {arXiv preprint arXiv:0709.2565},
  year   = {2008}
}

Comments

Version to appear in Physical Review D (RC)