English

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

High Energy Physics - Experiment 2010-04-08 v2

Abstract

Analyzing Υ(nS)\Upsilon(nS) decays acquired with the CLEO detector operating at the CESR e+ee^+e^- collider, we measure for the first time the product branching fractions B[Υ(nS)γχb((n1)PJ)]×B[χb(n1)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).

Keywords

Cite

@article{arxiv.0808.0933,
  title  = {Observation of chi-b(1PJ,2PJ) decays to light hadrons},
  author = {CLEO Collaboration and D. M. Asner},
  journal= {arXiv preprint arXiv:0808.0933},
  year   = {2010}
}

Comments

12 pages, 3 figures, submitted to Phys. Rev. D (Rapid Communications)