Partial Wave Analysis of $J/\psi\to\gamma(\pi^+\pi^-\pi^+\pi^-)$

J. Z. Bai

doi:10.1016/S0370-2693(99)01393-3

Partial Wave Analysis of $J/\psi\to\gamma(\pi^+\pi^-\pi^+\pi^-)$

High Energy Physics - Experiment 2008-11-26 v2

Authors: J. Z. Bai

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Abstract

BES data on $J/\psi \to \gamma (\pi^{+} \pi^{-} \pi^{+} \pi^{-})$ have been analyzed into partial waves. We fit with resonances having $J^{PC}=2^{++}$ at 1275 MeV, $0^{++}$ at 1500 MeV, $2^{++}$ at 1565 MeV, $0^{++}$ at 1740 MeV, $2^{++}$ at 1940 MeV and $0^{++}$ at 2104 MeV, plus a broad $0^-$ component. The $0^{++}$ resonances decay dominantly to $\sigma\sigma$ , while $2^{++}$ resonances in the high mass region decay mainly to $f_2(1270)\sigma$ and $\sigma\sigma$ ; $2^{++}$ resonances from the low mass region decay dominantly to $\rho\rho$ .

Keywords

partial wave analysis J/psi decay resonances sigma sigma rho rho

Cite

@article{arxiv.hep-ex/9909040,
  title  = {Partial Wave Analysis of $J/\psi\to\gamma(\pi^+\pi^-\pi^+\pi^-)$},
  author = {J. Z. Bai},
  journal= {arXiv preprint arXiv:hep-ex/9909040},
  year   = {2008}
}