Observation of a Near-Threshold ωJ/ψ Mass Enhancement in Exclusive BKωJ/ψ Decays

S.-K. Choi et al. (Belle Collaboration)
Phys. Rev. Lett. 94, 182002 – Published 12 May 2005

Abstract

We report the observation of a near-threshold enhancement in the ωJ/ψ invariant mass distribution for exclusive BKωJ/ψ decays. The results are obtained from a 253fb1 data sample that contains 275×106 BB¯ pairs that were collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e collider. The statistical significance of the ωJ/ψ mass enhancement is estimated to be greater than 8σ.

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  • Received 23 December 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.182002

©2005 American Physical Society

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Vol. 94, Iss. 18 — 13 May 2005

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