Measurement of sigma(e+e- -->psi(3770)-->hadrons) at Ec.m.=3773 MeV

• Published in: Physical review letters 2006-03, Vol.96 (9), p.092002-092002
• Main Authors: Besson, D, Pedlar, T K, Cronin-Hennessy, D, Gao, K Y, Gong, D T, Hietala, J, Kubota, Y, Klein, T, Lang, B W, Poling, R, Scott, A W, Smith, A, Dobbs, S, Metreveli, Z, Seth, K K, Tomaradze, A, Zweber, P, Ernst, J, Arms, K, Severini, H, Dytman, S A, Love, W, Mehrabyan, S, Mueller, J A, Savinov, V, Li, Z, Lopez, A, Mendez, H, Ramirez, J, Huang, G S, Miller, D H, Pavlunin, V, Sanghi, B, Shipsey, I P J, Adams, G S, Anderson, M, Cummings, J P, Danko, I, Napolitano, J, He, Q, Muramatsu, H, Park, C S, Thorndike, E H, Coan, T E, Gao, Y S, Liu, F, Artuso, M, Boulahouache, C, Blusk, S, Butt, J, Li, J, Menaa, N, Mountain, R, Nisar, S, Randrianarivony, K, Redjimi, R, Sia, R, Skwarnicki, T, Stone, S, Wang, J C, Zhang, K, Csorna, S E, Bonvicini, G, Cinabro, D, Dubrovin, M, Lincoln, A, Briere, R A, Chen, G P, Chen, J, Ferguson, T, Tatishvili, G, Vogel, H, Watkins, M E, Rosner, J L, Adam, N E, Alexander, J P, Berkelman, K, Cassel, D G, Duboscq, J E, Ecklund, K M, Ehrlich, R, Fields, L, Gibbons, L, Gray, R, Gray, S W, Hartill, D L, Heltsley, B K, Hertz, D, Jones, C D, Kandaswamy, J, Kreinick, D L, Kuznetsov, V E, Mahlke-Krüger, H, Meyer, T O, Onyisi, P U E, Patterson, J R, Peterson, D, Phillips, E A, Pivarski, J, Riley, D
• Format: Article
• Language: English
• ISSN: 0031-9007

We measure the cross section for e+e- -->psi(3770) -->hadrons at Ec.m.=3773 MeV to be (6.38+/-0.08(+0.41)(-0.30) nb using the CLEO detector at the CESR e+e- collider. The difference between this and the e+e- -->psi(3770) -->DD cross section at the same energy is found to be (-0.01+/-0.08(+0.41)(-0.30) nb. With the observed total cross section, we extract Gamma(ee)(psi(3770))=(0.204+/-0.003(+0.041)(-0.027) keV. Uncertainties shown are statistical and systematic, respectively.