Measurement of e e ! 3770 ! hadrons at E c : m : 3773 MeV
نویسندگان
چکیده
D. Besson, T. K. Pedlar, D. Cronin-Hennessy, K. Y. Gao, D. T. Gong, J. Hietala, Y. Kubota, T. Klein, B. W. Lang, R. Poling, A. W. Scott, A. Smith, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, J. Ernst, K. Arms, H. Severini, S. A. Dytman, W. Love, 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, I. P. J. Shipsey, G. S. Adams, M. Anderson, J. P. Cummings, I. Danko, J. Napolitano, Q. He, H. Muramatsu, C. S. Park, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, M. Artuso, C. Boulahouache, S. Blusk, J. Butt, J. Li, N. Menaa, R. Mountain, S. Nisar, K. Randrianarivony, R. Redjimi, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, K. Zhang, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Lincoln, R. A. Briere, G. P. Chen, J. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, J. L. Rosner, N. E. Adam, J. P. Alexander, K. Berkelman, D. G. Cassel, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, L. Gibbons, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, H. Mahlke-Krüger, T. O. Meyer, P. U. E. Onyisi, J. R. Patterson, D. Peterson, E. A. Phillips, J. Pivarski, D. Riley, A. Ryd, A. J. Sadoff, H. Schwarthoff, X. Shi, S. Stroiney, W. M. Sun, T. Wilksen, M. Weinberger, S. B. Athar, P. Avery, L. Breva-Newell, R. Patel, V. Potlia, H. Stoeck, J. Yelton, P. Rubin, C. Cawlfield, B. I. Eisenstein, I. Karliner, D. Kim, N. Lowrey, P. Naik, C. Sedlack, M. Selen, E. J. White, J. Wiss, M. R. Shepherd, D. M. Asner, and K. W. Edwards
منابع مشابه
Measurement of sigma(e+e- -->psi(3770)-->hadrons) at Ec.m.=3773 MeV.
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(+0.0...
متن کاملRecent Cleo-c Results
Recent CLEO-c results on open and closed charm physics at center-of-mass energy of 3773 MeV (ψ(3770) resonance), 4170 MeV and 3686 MeV (ψ(2S) peak) are reviewed. Measurements of absolute hadronic branching ratios of D 0 , D + and D + s mesons as well as charmonium spectroscopy are discussed. An outlook and future prospects for the experiment at CESR is also presented.
متن کامل/ 07 02 00 8 v 1 2 F eb 2 00 7 Recent CLEO - c Results H . Mendez
Recent CLEO-c results on open and closed charm physics at center-of-mass energy of 3773 MeV (ψ(3770) resonance), 4170 MeV and 3686 MeV (ψ(2S) peak) are reviewed. Measurements of absolute hadronic branching ratios of D 0 , D + and D + s mesons as well as charmonium spectroscopy are discussed. An outlook and future prospects for the experiment at CESR is also presented.
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We observe signals for the decays psi(3770) --> XJ/psi from data acquired with the CLEO detector operating at the CESR e+ e- collider with square root of s = 3773 MeV. We measure the following branching fractions Beta(psi(3770) --> XJ/psi and significances: (189 +/- 20 +/- 20) x 10(-5) (11.6sigma) for X = pi+ pi-, (80 +/- 25 +/- 16) x 10(-5) (3.4sigma) for X = pi0 pi0, and (87 +/- 33 +/- 22) x ...
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The large decay rate observed by Belle for B+ → ψ(3770)K+, which is comparable to B+ → ψ(3686)K+, might indicate either an unexpectedly large S-D mixing angle |θ| ≈ 40o or the leading role of the color-octet mechanism in D-wave charmonium production in B decay. By calculating the production rate of ψ(3770) in the continuum e+e− annihilation at √ s = 10.6 GeV with these two possible approaches (...
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