Observation of $K^*(892)^0\bar K^*(892)^0$ in $χ_{cJ}$ Decays

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dc.creatorBES Collaboration
dc.creatorAblikim, M.
dc.date2004-08-06
dc.date.accessioned2026-07-07T10:28:27Z
dc.date.available2026-07-07T10:28:27Z
dc.description$K^*(892)^0\bar K^*(892)^0$ signals from $χ_{cJ} (J=0,1,2)$ decays are observed for the first time using a data sample of 14 million $ψ(2S)$ events accumulated at the BES II detector. The branching fractions ${\cal B}(χ_{cJ}\to K^*(892)^0\bar K^*(892)^0)$ $(J = 0,1,2)$ are determined to be $(1.55 \pm 0.35 \pm 0.30)\times 10^{-3}$, $(1.58 \pm 0.32 \pm 0.29)\times 10^{-3}$, and $(4.67 \pm 0.55 \pm 0.85)\times 10^{-3}$ for the $χ_{c0}$, $χ_{c1}$ and $χ_{c2}$ decays, respectively, where the first errors are statistical and the second are systematic. The significances of these signals are about 4.2$σ$, 4.3$σ$, and 7.5$σ$, respectively.
dc.description8 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0408012
dc.identifierhttp://arxiv.org/abs/hep-ex/0408012
dc.identifierPhys.Rev.D70:092003,2004
dc.identifierdoi:10.1103/PhysRevD.70.092003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177452
dc.subjectHigh Energy Physics - Experiment
dc.titleObservation of $K^*(892)^0\bar K^*(892)^0$ in $χ_{cJ}$ Decays
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