Observation of Bs Production at the Υ(5S) Resonance

G. Bonvicini*, D. Cinabro, M. Dubrovin, A. Lincoln, A. Bornheim, S. P. Pappas, A. J. Weinstein, D. M. Asner, K. W. Edwards, 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. BerkelmanD. G. Cassel, V. Crede, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, L. Gibbons, B. Gittelman, 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, M. R. Shepherd, S. Stroiney, W. M. Sun, D. Urner, T. Wilksen, K. M. Weaver, 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, G. D. Gollin, I. Karliner, D. Kim, N. Lowrey, P. Naik, C. Sedlack, M. Selen, E. J. White, J. Williams, J. Wiss, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, K. Y. Gao, D. T. Gong, J. Hietala, Y. Kubota, T. Klein, B. W. Lang, S. Z. Li, 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, Y. Maravin, M. Artuso, C. Boulahouache, S. Blusk, J. Butt, O. Dorjkhaidav, J. Li, N. Menaa, R. Mountain, R. Nandakumar, K. Randrianarivony, R. Redjimi, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, K. Zhang, S. E. Csorna

*Corresponding author for this work

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33 Scopus citations


Using the CLEO detector at the Cornell Electron Storage Ring, we have observed the Bs meson in e+e- annihilation at the Υ(5S) resonance. We find 14 candidates consistent with Bs decays into final states with a J/ψ or a Ds(*)-. The probability that we have observed a background fluctuation is less than 8×10-10. We have established that at the energy of the Υ(5S) resonance Bs production proceeds predominantly through the creation of Bs*B̄s* pairs. We find σ(e+e-→Bs*B̄s*)=[0.11-0.03+0.04(stat)±0.02(syst)]nb, and set the following limits: σ(e+e-→BsB̄s)/σ (e+e-→Bs*B̄s*)<0.16 and [σ(e+e-→BsB̄s*) +σ(e+e-→Bs*B̄s)]/σ(e+e-→Bs*B̄ s*)<0.16 (90% C.L.). The mass of the Bs* meson is measured to be MBs*=[5.414±0.001(stat)±0.003(syst)]GeV/c2.

Original languageEnglish (US)
Article number022002
JournalPhysical review letters
Issue number2
StatePublished - Jan 20 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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