Partial Wave Analysis of $J/ψ\toγ(π^+π^-π^+π^-)$

Details Partial Wave Analysis of $J/ψ\toγ(π^+π^-π^+π^-)$ Partial Wave Analysis of $J/ψ\toγ(π^+π^-π^+π^-)$

1999-09-23

arxiv.org/abs/hep-ex/9909040v2

Phys.Lett.B472:207-214,2000

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 6 figures, 2 tables, Submitted to PLB

Scientific paper

10.1016/S0370-2693(99)01393-3

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 $\rho\rho$.

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