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

Authors
Publication date
23 December 2004
Publisher
'American Physical Society (APS)'
Doi
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    Abstract

    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.Comment: 12 pages, 4 figures, submitted to Physical Review Letter

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