Tetraquark interpretation of the BELLE data on the anomalous $\Upsilon(1S) \pi^+\pi^-$ and $\Upsilon(2S) \pi^+\pi^-$ production near the $\Upsilon(5S)$ resonance

@inproceedings{Ali2009TetraquarkIO,
  title={Tetraquark interpretation of the BELLE data on the anomalous \$\Upsilon(1S) \pi^+\pi^-\$ and \$\Upsilon(2S) \pi^+\pi^-\$ production near the \$\Upsilon(5S)\$ resonance},
  author={Ahmed Farag Ali and Christian Hambrock and M. Jamil Aslam},
  year={2009}
}
We analyze the Belle data [K. F. Chen et al. (Belle Collaboration), Phys. Rev. Lett. 100, 112001 (2008); I. Adachi et al. (Belle Collaboration), arXiv:0808.2445] on the processes ee → Υ(1S) ππ,Υ(2S) ππ near the peak of theΥ(5S) resonance, which are found to be anomalously large in rates compared to similar dipion transition s between the lower Υ resonances. Assuming these final states arise from the production and decays of the J = 1 stateYb(10890), which we interpret as a bound (diquark… Expand
1 Citations

Figures and Tables from this paper

Paper Mentions

Study of Bs0-meson Production and Measurement of Bs0 Decays into a Ds(*)- and a Light Meson in e+e- Collisions at √s=10.87 GeV
This work is dedicated to the experimental study of Bs0 production in e+e– collisions at the Υ(5S) resonance (√s = 10.87 GeV), as well as measurement with fully reconstructed Bs0 decays involving oneExpand