4 research outputs found

    Observation of chi-b(1PJ,2PJ) decays to light hadrons

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    Analyzing Υ(nS)\Upsilon(nS) decays acquired with the CLEO detector operating at the CESR e+e−e^+e^- collider, we measure for the first time the product branching fractions B[Υ(nS)→γχb((n−1)PJ)]×B[χb(n−1)PJ)→Xi]{\cal B}[\Upsilon(nS)\to\gamma\chi_{b}((n-1)P_J)] \times {\cal B}[\chi_{b}(n-1)P_J)\to X_i] for n=2n=2 and 3, where XiX_i denotes, for each ii, one of the fourteen exclusive light-hadron final states for which we observe significant signals in both χb(1PJ)\chi_b(1P_J) and χb(2PJ)\chi_b(2P_J) decays. We also determine upper limits for the electric dipole (E1) transitions Υ(3S)→γχb(1PJ)\Upsilon(3S) \to \gamma \chi_b(1P_J).Comment: 12 pages, 3 figures, submitted to Phys. Rev. D (Rapid Communications
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