Search for X(3872) in gamma gamma Fusion and ISR at CLEO

Details Search for X(3872) in gamma gamma Fusion and ISR at CLEO Search for X(3872) in gamma gamma Fusion and ISR at CLEO

2005-01-07

arxiv.org/abs/hep-ex/0501015v1

J.Phys.Conf.Ser. 9 (2005) 75-78

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 2 figures, to appear in the proceedings of the 1st Meeting of the APS Topical Group on Hadronic Physics, Fermilab, Oc

Scientific paper

10.1088/1742-6596/9/1/011

We report on a search for the X(3872) state using 15.1 fb^{-1} of e+ e- annihilation data taken with the CLEO III detector in the sqrt{s} = 9.46-11.30 GeV region. Separate searches for the production of X(3872) in untagged gamma gamma fusion and e+ e- annihilation following initial state radiation are made by taking advantage of the unique correlation of J/psi -> l+ l- in X(3872) decay into J/psi pi+ pi-. No signals are observed in either case, and 90% confidence upper limits are established as (2J+1)Gamma_{gammagamma}(X(3872))B(X -> J/psi pi+ pi-) < 12.9 eV and Gamma_{ee}(X(3872))B(X -> J/psi pi+ pi-) < 8.3 eV.

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