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Search for narrow resonances in e+e? annihilation at c.m. energies between 29.90 and 31.46 GeV
Authors:W Bartel  D Cords  P Dittmann  R Eichler  R Felst  D Haidt  S Kawabata  H Krehbiel  B Naroska  LH O&#x;Neill  J Olsson  P Steffen  E Elsen  M Helm  A Petersen  P Warming  G Weber  C Yanagisawa
Institution:1. Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany;2. II. Institut für Experimentalphysik der Universität Hamburg, Germany;3. Physikalisches Institut der Universität Heidelberg, Germany
Abstract:A search for narrow resonances in e+e? annihilation at c.m. energies between 29.90 and 31.46 GeV provides no evidence for the existence of such states. The 90% confidence upper limit on the integrated resonance cross section is 38 nb MeV, significantly below the value expected for the lowest (t,t?) bound state.
Keywords:JADE Collaboration
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