Search For X(3872) In Gamma Gamma Fusion And Radiative Production At Cleo

S. Dobbs,Z. Metreveli,K. K. Seth, A. Tomaradze,P. Zweber,J. Ernst,A. H. Mahmood, H. Severini,D. M. Asner,S. A. Dytman,S. Mehrabyan,J. A. Mueller, V. Savinov, Z. Li,A. Lopez,H. Mendez,J. Ramirez,G. S. Huang,D. H. Miller, V. Pavlunin,B. Sanghi,E. I. Shibata, I. P. J. Shipsey,G. S. Adams,M. Chasse,M. Cravey,J. P. Cummings,I. Danko,J. Napolitano,D. Cronin-Hennessy,J. B. Thayer,E. H. Thorndike,T. E. Coan,Y. S. Gao,F. Liu,M. Artuso, C. Boulahouache,S. Blusk,J. Butt,E. Dambasuren,N. Menaa,H. Muramatsu,R. Nandakumar, R. Redjimi,R. Sia,T. Skwarnicki,J. C. Wang, K. Zhang,G. Bonvicini,D. Cinabro, M. Dubrovin,A. Bornheim,S. P. Pappas,A. J. Weinstein,R. A. Briere,G. P. Chen,T. Ferguson,G. Tatishvili,H. Vogel,M. E. Watkins,J. L. Rosner,N. E. Adam,J. P. Alexander,K. Berkelman,D. G. Cassel,V. Crede,J. E. Duboscq,K. M. Ecklund,R. Ehrlich,R. S. Galik, L. Gibbons,B. Gittelman,R. Gray,S. W. Gray,D. L. Hartill,B. K. Heltsley,D. Hertz,L. Hsu,C. D. Jones,J. Kandaswamy,D. L. Kreinick,V. E. Kuznetsov, H. Mahlke-Kruger,T. O. Meyer,J. R. Patterson, D. Peterson,J. Pivarski, D. Riley, A. Ryd,A. J. Sadoff,H. Schwarthoff,M. R. Shepherd,S. Stroiney,W. M. Sun,J. G. Thayer,D. Urner,T. Wilksen,M. Weinberger,S. B. Athar,L. Breva-Newell, R. Patel,H. Stoeck, J. Yelton,C. Cawlfield, B. I. Eisenstein,G. D. Gollin, I. Karliner,D. Kim, N. Lowrey,P. Naik,C. Sedlack,M. Selen,J. J. Thaler,J. Williams, J. Wiss, K. W. Edwards, D. Besson,T. K. Pedlar,K. Y. Gao,D. T. Gong,Y. Kubota,B. W. Lang,R. Poling,A. W. Scott,A. Smith,C. J. Stepaniak,J. Wiss, K. Edwards, D. Besson,T. Pedlar,K. Gao,D. Gong,Y. Kubota,B. Lang,S. Li,R. Poling,A. Scott,A. Smith,C. Stepaniak

PHYSICAL REVIEW LETTERS（2005）

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摘要

We report on a search for the recently reported X(3872) state using 15.1 fb(-1) of e(+)e(-) data taken in the roots=9.46-11.30 GeV region. Separate searches for the production of the X(3872) in untagged gammagamma 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/psi-->l(+)l(-) in X(3872) decay to pi(+)pi(-)J/psi. No signals are observed in either case, and 90% confidence upper limits are established as (2J+1)Gamma(gammagamma)(X(3872))B(X-->pi(+)pi(-)J/psi)<12.9 eV and Gamma(ee)(X(3872))B(X-->pi(+)pi(-)J/psi)<8.3 eV.

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