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Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays

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arxiv hep-ex/0408126 v2 pith:ZMUM5IB7 submitted 2004-08-25 hep-ex

S.-K. Choi , S.L. Olsen , et al. (for the Belle Collaboration) This is my paper · ORCID
classification hep-ex
keywords enhancementmassomega-jdecaysexclusivenear-thresholdobservationomega
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We report the observation of a near-threshold enhancement in the omega-J/psi invariant mass distribution for exclusive B-->K omega J/psi decays. The results are obtained from a 253 fb-1 data sample that contains 275 million BB-bar meson pairs that were collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. The statistical significance of the omega-J/psi mass enhancement is estimated to be greater than 8 sigma.

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Cited by 2 Pith papers

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    A coupled-channel mixture model fitted to the X(3872) and Z(3930) masses predicts the X(3860) at about 3867 MeV, dominated by the charmonium core.

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