Obervation of χ_{cJ}--> omega omega decays

Abstract

Decays of $χ_{c0,2}\ar\ww$ are observed for the first time using a sample of $14.0\times 10^6$ $\psi (2S)$ events collected with the BESII detector. The branching ratios are determined to be ${\cal B}(χ_{c0}\ar \ww)=(2.29\pm 0.58\pm 0.41)\times 10^{-3}$ and ${\cal B}(χ_{c2}\ar\ww)=(1.77\pm 0.47\pm 0.36)\times 10^{-3}$, where the first errors are statistical and the second systematic. The significances of the two signals are $4.4\sigma$ and $4.7\sigma$, respectively.

arXiv comment6 pages, 6 figures

References in corpus (6)

• Is $f_0(1500)$ a Scalar Glueball?
• Mechanisms for ${\chi }_{cJ}\to \varphi \varphi$ Decays
• Photon Transitions in ψ(2S) Decays to χ_{cJ}(1P) and η_c(1S)
• Study of the Hadronic Decays of χ_c States
• Evidence for f0(980)f0(980) production in chi_c0 decays
• Observation of $K^{\ast }(892{)}^0{\bar{K}}^{\ast }(892{)}^0$ in ${\chi }_{cJ}$ Decays

Cited by in corpus (7)

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• First measurements of J/Psi decays into ${\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Xi }^0{\bar{\Xi }}^0$
• χ_{c0,2} decay into light meson pairs and its implication of the scalar meson structures
• Measurement of χ_cJ--> K+K-K+K-
• Probing scalar meson structures in ${\chi }_{c1}$ decays into pseudoscalar and scalar
• Study the decays of ${\chi }_{cJ}(J=0,1,2)$ to light meson pairs with SU(3) flavor symmetry/breaking analysis