Search for X(3872) in γγ Fusion and Radiative Production at CLEO

We report on a search for the recently reported X(3872) state using 15.1 fb^-1 of e⁺e^- data taken in the √(s)=9.46 11.30 GeV region. Separate searches for the production of the X(3872) in untagged γγ fusion and e⁺e^- annihilation following initial state radiation are made by taking advantage of the unique angular correlation between the leptons from the decay J/ψ→l⁺l^- in X(3872) decay to π⁺π^-J/ψ. No signals are observed in either case, and 90% confidence upper limits are established as (2J+1)Γ_γγ(X(3872))B(X→π⁺π^-J/ψ)<12.9 eV and Γ_ee(X(3872))B(X→π⁺π^-J/ψ)<8.3 eV.