Measurement of the branching fractions for J/ψ→+-

Z. Li, A. Lopez, H. Mendez, J. Ramirez, G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, E. I. Shibata, I. P J Shipsey, G. S. Adams, M. Chasse, M. Cravey, J. P. Cummings, I. Danko, J. Napolitano, Q. He, H. Muramatsu, C. S. Park, W. ParkE. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, Marina Artuso, C. Boulahouache, Steven Roy Blusk, J. Butt, E. Dambasuren, O. Dorjkhaidav, J. Li, N. Menaa, R. Mountain, R. Nandakumar, R. Redjimi, R. Sia, Tomasz Skwarnicki, Sheldon Stone, J. C. Wang, K. Zhang, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, 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. Berkelman, D. G. Cassel, V. Crede, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, R. S. Galik, L. Gibbons, B. Gittelman, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, L. Hsu, 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, M. R. Shepherd, S. Stroiney, W. M. Sun, D. Urner, 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, G. D. Gollin, I. Karliner, D. Kim, N. Lowrey, P. Naik, C. Sedlack, M. Selen, J. Williams, J. Wiss, K. W. Edwards, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, K. Y. Gao, D. T. Gong, 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, A. H. Mahmood, H. Severini, D. M. Asner, S. A. Dytman, W. Love, S. Mehrabyan, J. A. Mueller, V. Savinov

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Abstract

We present measurements of the branching fractions for J/ψ→e+e- and μ+μ- using 3M ψ(2S) decays collected with the CLEO detector operating at the CESR e+e- collider. We obtain B(J/ψ→e+e-)=(5. 945±0.067±0.042)% and B(J/ψ→μ+μ-)=(5.960±0. 065±0.050)%, leading to an average of B(J/ψ→+-)=(5.953±0. 056±0.042)% and a ratio of B(J/ψ→e+e-)/B(J/ψ→μ+μ- )=(99.7±1.2±0.6)%, all consistent with, but more precise than, previous measurements.

Original languageEnglish (US)
Article number111103
JournalPhysical Review D
Volume71
Issue number11
DOIs
StatePublished - Jun 1 2005

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Li, Z., Lopez, A., Mendez, H., Ramirez, J., Huang, G. S., Miller, D. H., Pavlunin, V., Sanghi, B., Shibata, E. I., Shipsey, I. P. J., Adams, G. S., Chasse, M., Cravey, M., Cummings, J. P., Danko, I., Napolitano, J., He, Q., Muramatsu, H., Park, C. S., ... Savinov, V. (2005). Measurement of the branching fractions for J/ψ→+-. Physical Review D, 71(11), [111103]. https://doi.org/10.1103/PhysRevD.71.111103