Recent data on charmonium production in B-meson decays suggest that charmonium hybrid mesons with mass ∼ 4 GeV may be produced in B-decay via cc̄ colour octet operators. Some of these states are likely to be narrow with clean signatures to J/ψπ +π - and J/ψγ final states. Experimental signatures and search strategies for existing B-factories are described.

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Journal Physics Letters B
Close, F.E., & Godfrey, S. (2003). Charmonium hybrid production in exclusive B-meson decays. Physics Letters B, 574(3-4), 210–216. doi:10.1016/j.physletb.2003.09.011