Measurement of B(Υ(5S)→Bs(*)B̄s(*)) using mesons

G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, I. P.J. Shipsey, B. Xin, G. S. Adams, M. Anderson, J. P. Cummings, I. Danko, J. Napolitano, Q. He, J. Insler, H. Muramatsu, C. S. Park, E. H. Thorndike, F. Yang, T. E. Coan, Y. S. Gao, F. LiuM. Artuso, 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, D. M. Asner, K. W. Edwards, R. A. Briere, I. Brock, 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, P. U.E. Onyisi, J. R. Patterson, D. Peterson, 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, R. Patel, V. Potlia, 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. 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, P. Zweber, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, J. Ernst, H. Severini, S. A. Dytman, W. Love, V. Savinov, O. Aquines, Z. Li, A. Lopez, S. Mehrabyan, H. Mendez, J. Ramirez

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

Knowledge of the Bs decay fraction of the Υ(5S) resonance, fS, is important for Bs meson studies at the Υ(5S) energy. Using a data sample collected by the CLEO III detector at CESR consisting of 0.423fb-1 on the Υ(5S) resonance, 6.34fb-1 on the Υ(4S) and 2.32fb-1 in the continuum below the Υ(4S), we measure B(Υ(5S)→ X)=(13.8±0.7-1.5+2.3) % and B(Υ(4S)→ X)=(7.1±0.1±0.6)%; the ratio of the two rates is (1.9±0.1-0.2+0.3). This is the first measurement of the meson yield from the Υ(5S). Using these rates, and a model dependent estimate of B(Bs→ X), we determine fS=(24.6±2.9-5.3+11.0)%. We also update our previous independent measurement of fS made using the inclusive Ds yields to now be (16.8±2.6-3.4+6.7)%, due to a better estimate of the number of hadronic events. We also report the total Υ(5S) hadronic cross section above continuum to be σ(e+e-→Υ(5S))=(0.301±0. 002±0.039)nb. This allows us to extract the fraction of B mesons as (58.9±10.0±9.2)%, equal to 1-fS. Averaging the three methods gives a model dependent result of fS=(21-3+6)%.

Original languageEnglish (US)
Article number012002
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number1
DOIs
StatePublished - Jan 29 2007

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Measurement of B(Υ(5S)→Bs(*)B̄s(*)) using mesons'. Together they form a unique fingerprint.

  • Cite this

    Huang, G. S., Miller, D. H., Pavlunin, V., Sanghi, B., Shipsey, I. P. J., Xin, B., Adams, G. S., Anderson, M., Cummings, J. P., Danko, I., Napolitano, J., He, Q., Insler, J., Muramatsu, H., Park, C. S., Thorndike, E. H., Yang, F., Coan, T. E., Gao, Y. S., ... Ramirez, J. (2007). Measurement of B(Υ(5S)→Bs(*)B̄s(*)) using mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(1), [012002]. https://doi.org/10.1103/PhysRevD.75.012002