Evidence for f0(980)f0(980) production in chi_c0 decays

Details Evidence for f0(980)f0(980) production in chi_c0 decays Evidence for f0(980)f0(980) production in chi_c0 decays

2004-06-28

arxiv.org/abs/hep-ex/0406079v1

Phys.Rev.D70:092002,2004

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 6 figures

Scientific paper

10.1103/PhysRevD.70.092002

Using a sample of 14 million $\psi(2S)$ events accumulated with the BES II detector, evidence for $f_0(980)f_0(980)$ production in $\chi_{c0}$ decays is obtained for the first time; the branching ratio is determined to be ${\cal B}(\chi_{c0}\to f_0(980)f_0(980)\to\pi^+\pi^-\pi^+\pi^-) = (7.6 \pm 1.9 ({\rm stat}) \pm 1.6 ({\rm syst})) \times 10^{-4}$. The significance of the $f_0(980)$ signal is about 4.6$\sigma$.

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