Dielectron widths of the Y(1S,2S,3S) resonances

J. L. Rosner, N. E. Adam, J. P. Alexander, K. Berkelman, D. G. Cassel, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, R. S. Galik, 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. KuznetsovH. 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, S. Stroiney, W. M. Sun, T. Wilksen, 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, 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, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, J. Ernst, K. Arms, H. Severini, S. A. Dytman, W. Love, S. Mehrabyan, V. Savinov, O. Aquines, Z. Li, A. Lopez, H. Mendez, J. Ramirez, 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, T. E. Coan, Y. S. Gao, F. Liu, R. Stroynowski, Marina Artuso, Steven Roy Blusk, J. Butt, J. Li, N. Menaa, R. Mountain, S. Nisar, K. Randrianarivony, R. Redjimi, R. Sia, Tomasz Skwarnicki, Sheldon 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, J. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins

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Abstract

We determine the dielectron widths of the Υ(1S), Υ(2S), and Υ(3S) resonances with better than 2% precision by integrating the cross section of e+e-→Υ over the e+e- center-of-mass energy. Using e+e- energy scans of the Υ resonances at the Cornell Electron Storage Ring and measuring Υ production with the CLEO detector, we find dielectron widths of 1.252±0.004(σstat)±0.019(σsyst)keV, 0.581±0.004±0.009keV, and 0.413±0.004±0.006keV for the Υ(1S), Υ(2S), and Υ(3S), respectively.

Original languageEnglish (US)
Article number092003
JournalPhysical Review Letters
Volume96
Issue number9
DOIs
StatePublished - 2006

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Rosner, J. L., Adam, N. E., Alexander, J. P., Berkelman, K., Cassel, D. G., Duboscq, J. E., Ecklund, K. M., Ehrlich, R., Fields, L., Galik, R. S., Gibbons, L., Gray, R., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hertz, D., Jones, C. D., Kandaswamy, J., Kreinick, D. L., ... Watkins, M. E. (2006). Dielectron widths of the Y(1S,2S,3S) resonances. Physical Review Letters, 96(9), [092003]. https://doi.org/10.1103/PhysRevLett.96.092003