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Determination of G{cyrillic}ee of the Υ(1 S) and Υ(2 S) resonances, and measurement of R at W=9.39 GeV

  • Z. Jakubowski
  • , D. Antreasyan
  • , H. W. Bartels
  • , D. Besset
  • , Ch Bieler
  • , J. K. Bienlein
  • , A. Bizzeti
  • , E. D. Bloom
  • , I. Brock
  • , K. Brockmüller
  • , R. Cabenda
  • , A. Cartacci
  • , M. Cavalli-Sforza
  • , R. Clare
  • , A. Compagnucci
  • , G. Conforto
  • , R. Cowan
  • , D. Coyne
  • , G. Drews
  • , A. Engler
  • K. Fairfield, G. Folger, A. Fridman, J. Gaiser, D. Gelphman, G. Glaser, G. Godfrey, K. Graaf, F. H. Heimlich, F. H. Heinsius, R. Hofstadter, J. Irion, H. Janssen, K. Karch, S. Keh, T. Kiel, H. Kilian, I. Kirkbride, T. Kloiber, M. Kobel, W. Koch, A. C. König, K. Königsmann, R. W. Kraemer, S. Krüger, G. Landi, R. Lee, S. Leffler, R. Lekebusch, A. M. Litke, W. Lockmann, S. Lowe, B. Lurz, D. Marlow, H. Marsiske, W. Maschmann, P. McBride, H. Meyer, B. Muryn, F. Messing, W. J. Metzger, B. Monteleoni, R. Nernst, B. Niczyporuk, G. Nowak, C. Peck, C. Pegel, P. G. Pelfer, B. Pollock, C. Pols, F. C. Porter, D. Prindle, P. Ratoff, M. Reidenbach, B. Renger, C. Rippich, M. Scheer, P. Schmitt, J. Schotanus, J. Schütte, A. Schwarz, F. Selonke, D. Sievers, T. Skwarnicki, V. Stock, K. Strauch, U. Strohbusch, J. Tompkins, H. J. Trost, B. van Uitert, R. T. Van de Walle, H. Vogel, A. Voigt, U. Volland, K. Wachs, K. Wacker, W. Walk, H. Wegener, D. Williams, P. Zschorsch

Research output: Contribution to journalArticlepeer-review

Abstract

Using the Crystal Ball detector operating at the DORIS II storage ring we have measured the leptonic partial widths G{cyrillic}ee of the Υ(1 S) and Υ(2 S) resonances. We find {Mathematical expression} and {Mathematical expression} The effect on G{cyrillic}ee of applying different prescriptions for radiative corrections is discussed. We also measure R, the ratio of non-resonant hadronic cross section to the Born cross section of μ pair production, at c.m. energy W=9.39 GeV to be R=3.48±0.04±0.16.

Original languageEnglish (US)
Pages (from-to)49-61
Number of pages13
JournalZeitschrift fur Physik C-Particles and Fields
Volume40
Issue number1
DOIs
StatePublished - Mar 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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