학술논문
Measurement of γγ widths of charmonium states
Document Type
article
Author
Chen, WY; McIlwain, RL; Miller, DH; Ng, CR; Schaffner, SF; Shibata, EI; Yao, WM; Sparks, K; Thorndike, EH; Wang, CH; Alam, MS; Kim, IJ; Li, WC; Lou, XC; Sun, CR; Wang, PN; Zoeller, MI; Bortoletto, D; Goldberg, M; Horwitz, N; Jain, V; Mestayer, MD; Moneti, GC; Sharma, V; Shipsey, IPJ; Skwarnicki, T; Thulasidas, M; Csorna, SE; Letson, T; Alexander, J; Artuso, M; Bebek, C; Berkelman, K; Cassel, DG; Cheu, E; Coffman, DM; Crawford, G; DeWire, JW; Dell, PS; Ehrlich, R; Galik, RS; Gittlman, B; Gray, SW; Halling, AM; Hartill, DL; Heltsley, BK; Kandaswamy, J; Katayama, N; Kreinick, DL; Lewis, JD; Mistry, NB; Mueller, J; Namjoshi, R; Nandi, S; Nordberg, E; O'Grady, C; Peterson, D; Pisharody, M; Riley, D; Sapper, M; Silverman, A; Stone, S; Worden, H; Worris, M; Sadoff, AJ; Avery, P; Besson, D; Garren, L; Yelton, J; Bowcock, T; Kinoshita, K; Pipkin, FM; Procario, M; Wilson, R; Wolinski, J; Xiao, D; Ammar, R; Baringer, P; Coppage, D; Haas, P; Lam, H; Jawahery, A; Park, CH; Kubota, Y; Nelson, JK; Perticone, D; Poling, R; Fulton, R; Hempstead, M; Jensen, T; Johnson, DR; Kagan, H; Kass, R; Morrow, F; Whitmore, J; Wilson, P
Source
Physics Letters B. 243(1-2)
Subject
Language
Abstract
Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γγγ(ηc)=5.9+2.1-1.8±1.9 keV, and we have obtained 95% CL upper limits of Γγγ(Xc0)